tag:blogger.com,1999:blog-38211620552728046632012-01-19T23:53:59.410-08:00various mathematics formula, table, article and free books include trigonometric, coefficient, integral, matrix, vector, algebra, statistics and others, you can download here for free and legalhasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.comBlogger481100tag:blogger.com,1999:blog-3821162055272804663.post-8182704061439883142012-01-09T23:10:00.000-08:002012-01-09T23:10:33.008-08:00

1. Addition of 5 When adding 5 to a digit greater than 5, it is easier to first subtract 5 and then add 10. For example, 8 + 5 = 13. Also 8 - 5 = 3; 3 + 10 = 13. 12 + 5 = 17. Also 12 - 5 = 7; 7 + 10 = 17. 2. Subtraction of 5 When subtracting 5 from a number ending with a a digit smaller than 5, it is easier to first add 5 and then subtract 10. For example, 26 - 5 = 21. Also 26 + 5 = 31; 31 -

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-5691296603797400952011-01-24T13:13:00.000-08:002011-01-24T13:13:07.529-08:00

Statistics is a mathematical science pertaining to the collection, analysis, interpretation, and presentation of data. It is applicable to a wide variety of academic disciplines, from the physical and social sciences to the humanities; it is also used and misused for making informed decisions in all areas of business and government. (wikipedia.org) its include histogram graphics theory,

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-66887341452738208042010-06-05T08:52:00.000-07:002010-06-22T09:39:11.007-07:00

in this post I provide a simple review of the two free books that I found after browsing about trigonometry, there is no end to the discussion of the triangle, we can explore a part of this mathematics ranging from history, until a new theory about the true triangle, two books that can be download for free following a discussion about two different things but actually interrelated, the first book

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.comtag:blogger.com,1999:blog-3821162055272804663.post-22752912717168875442010-01-31T09:06:00.000-08:002010-06-22T09:39:49.655-07:00

Integration is an important concept in mathematics and, together with differentiation, is one of the two main operations in calculus. Given a function ƒ of a real variable x and an interval [a, b] of the real line, the definite integral. to learn more about integral, here i write some list that i think best online help of integral. 1. Wolfram Integral http://integrals.wolfram.com/index.jsp The

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.comtag:blogger.com,1999:blog-3821162055272804663.post-72763540923908498252009-09-06T05:26:00.000-07:002009-09-06T07:18:30.550-07:00

various online help of calculus available in internet, every those website have their advantage, we can choose which website that can fit with what we need.below some list calculus website with their unique facilities1. http://www.calculus-help.com/this website provide various facilities with unique multimedia tutorial, problem's this week can become interactive tutorial source, available from

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com28tag:blogger.com,1999:blog-3821162055272804663.post-50639770987275086392008-10-28T08:02:00.000-07:002009-09-06T07:35:54.772-07:00

Linear Methods of Applied MathematicsOrthogonal series, boundary-value problems, and integral operatorsEvans M. Harrell II and James V. Herod © Copyright 1994,1995,1996, 1997, 2000 by Evans M. HarrellII and James V. Herod. All rights reserved.This is a WWW textbook written by Evans M. Harrell II and James V. Herod, both of Georgia Tech. It is suitable for a first course on partial differential

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com1tag:blogger.com,1999:blog-3821162055272804663.post-91658071349923627692008-10-05T08:32:00.000-07:002008-10-05T08:38:16.071-07:00

This is a textbook for a course in multivariable calculus. It has been used for the past few years here at Georgia Tech. The notes are available as Adobe Acrobat documents,this book also available online at http://www.math.gatech.edu/~cain/notes/calculus.html, written by George Cain and James HerodTitle page and Table of Contents Table of Contents Chapter One - Euclidean Three Space 1.1

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-90488993456372549502008-10-05T07:53:00.000-07:002008-10-05T08:31:59.972-07:00

his book is legal to download and available online at http://ocw.mit.edu/ans7870/resources/Strang/strangtext.htmTOCW is pleased to make this textbook available online. Published in 1991 and still in print from Wellesley-Cambridge Press, the book is a useful resource for educators and self-learners alike. It is well organized, covers single variable and multivariable calculus in depth, and is rich

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com1tag:blogger.com,1999:blog-3821162055272804663.post-29246353185001987392008-08-25T05:56:00.000-07:002009-09-06T08:00:37.346-07:00

Statistical Formulae 1Table 1 Binomial Cumulative Distribution Function Table 2 Poisson Cumulative Distribution Function Table 3 Standard Normal Cumulative Distribution Function Table 4 Percentage Points of the Standard Normal Distribution Table 5 The Student t Distribution Table 6 The Chi-squared Distribution Table 7 Mann-Whitney this file written by www.sqa.org.uk, complete list of statistical

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-9993098153797847842008-06-20T05:00:00.000-07:002009-09-06T07:38:00.025-07:00

Written by Reinhard Diestel received a PhD from the University of Cambridge, following research 1983-86 as a scholar of Trinity College under Béla Bollobás. He was a fellow of St. John's College, Cambridge, from 1986 to 1990. Research appointments and scholarships have taken him to Bielefeld (Germany), Oxford and the US. He became a professor in Chemnitz in 1994 and has held a chair at Hamburg

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-65747585251265549092008-05-21T06:56:00.000-07:002009-09-06T07:40:53.119-07:00

This document contains 66 pages with mathematical equations intended for physicists and engineers. It is intended to be a short reference for anyone who often needs to look up mathematical equations, This document can also be obtained from the author, JohanWevers, This document is Copyright by J.C.A. Wevers. All rights reserved. Permission to use, copy and distribute this unmodified document by

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-4828048581067094442008-04-19T16:52:00.000-07:002009-09-06T07:41:28.864-07:00

Universal algebra (sometimes called general algebra) is the field of mathematics that studies the ideas common to all algebraic structures.In addition to its unifying approach, Universal algebra also gives deep theorems and important examples and counterexamples. It provides a useful framework for those who intend to start the study of new classes of algebras. It can enable the use of methods

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-57209402273771541842008-02-08T18:55:00.000-08:002009-09-06T07:42:18.701-07:00

Trigonometric Relations is relation between each angle of trigonometric function like cos with sin, sin with tang, sinxsin + cosxcos and othes relationto learn more about trigonometric function from the introduction online, i recommended this site http://www.ping.be/ this site have enough resources about trigonometric function like :Definitions and basicsTrigonometric circle and

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-7220828276804146272008-01-07T03:37:00.000-08:002009-09-06T07:42:56.140-07:00

Geometry (Greek γεωμετρία; geo = earth, metria = measure) is a part of mathematics concerned with questions of size, shape, and relative position of figures and with properties of space, this science can be found from Egypt, Mesopotamia.you can looking more about geometry here, picture below shown the basic formula and calculation of basic shape.1. Polygon Shape 2. Triangle Here are three

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-34413627888863378422007-11-29T05:05:00.000-08:002009-09-06T07:43:55.401-07:00

Integral table make we more easy to understand and remember integral formula, integral is one of two basic of calculus operation, integral have various type they are :integrals of rational functionsintegrals of irrational functionsintegrals of trigonometric functionsintegrals of inverse trigonometric functionsintegrals of hyperbolic functionsintegrals of arc hyperbolic functionsintegrals of

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-68681766615357313792007-11-29T04:44:00.001-08:002009-09-06T08:00:28.938-07:00

this is Some Basic Statistical Formula article, written ricardo from ecn.edu, this article will explain very basic statistic formula about mean, median, variation, variance, standard deviation and standard error of the mean is an estimationBasic Statistical formula DownloadStatistics formula sheet second article is about H test, hypothesis test, mean, median, Discrete distributions, Test for

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-48968309318489286102007-11-29T04:44:00.000-08:002009-09-06T08:00:46.663-07:00

this is Some Basic Statistical Formula article, written ricardo from ecn.edu, this article will explain very basic statistic formula about mean, median, variation, variance, standard deviation and standard error of the mean is an estimationBasic Statistical formula Downloadfile type is pdfComplete Statistics Formula, Table and List

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-45584981587306251662007-11-29T04:34:00.000-08:002009-09-06T08:00:54.091-07:00

this post you will able to download Basic Practice of Statistics in pdf format, it's include Exploring Data and Distribution,Producing Data, Probability and SamplingDistributions,Data Relationships, Basics of Inference, mean, median and at the last page learn more about The Chi-Square Test, and One-way Analysis of Variance Comparing Several Means, this tutorial include table and formula of

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-7944577690950049882007-11-29T03:25:00.000-08:002009-09-06T08:01:04.184-07:00

at this post you will able to download mathematic formula with statistic specially in mean,and standard deviation, click link below to downloadStatistic Formula - Mean and Deviation .DocStatistic Formula - Mean and Deviation .Pdfand here for probability formulaprobability formulayou can choose from those available format, .doc or .pdfComplete Statistics Formula, Table and List

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-32263398821845445602007-11-05T02:58:00.000-08:002009-09-06T07:51:56.451-07:00

this calculus book is an elementary calculus textbook written by Professor G. S. Gill of the Brigham Young University Mathematics Department. contains 370 pages, from basic calculus and complete with the formula and table list, beginning with function, limits and continuity, differentiation and the application, integration and application, it's free license book, so you can download it and read

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-12330123641097453352007-09-22T21:38:00.000-07:002007-09-22T23:45:58.645-07:00

written by Nigel Hitchin, this article explain about surfaces geometry, topology, reirman surface, and surface with RxRxR (it's difficult i think)and you also should learn hyperbolic geometry form this article, article consits of 100 page, and the good news it's it free and legal to downloadhere the link for download

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-13900979519630701592007-09-22T15:41:00.000-07:002007-09-22T20:43:50.093-07:00

Foundations of geometry for university students and senior high school students, This book is a textbook for the course of foundations of geometry. It is addressed to mathematics students in Universities and to High School students for more understanding and learning the elementary geometry, if you want to learn mathematics in geometry specializes this book is very useful to you, for beginning

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-21753512805915706762007-09-22T15:33:00.000-07:002007-09-22T15:40:38.977-07:00

pdf version for those kind article or book is very rare in internet,i just found 1 that i think very good to share, First steps this book are described in direction of Mandelbrot-set theory, which is direct extension of the eigenvalue problem from linear algebra, and is related by renormalization group ideas to the theory of phase transitions and dualities, written by V. Dolotin, A. Morozov they

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-60702642001678242432007-09-22T15:13:00.000-07:002007-09-22T15:33:39.769-07:00

The study of lattice varieties is a field that has experienced rapid growth in the last 30 years, but many of the interesting and deep results discovered in that period have so far only appeared in research papers. this book written by Peter Jipsen and Henry Rose The aim of this monograph is to present the main results about modular and non modular varieties, equation bases and the amalgamation

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-30682566289640178592007-09-22T14:59:00.000-07:002007-09-22T15:11:12.249-07:00

A vector quantity represents a set of three scalar quantities or numbers which have something in common and are collectively referred to as a vector. Examples are velocity, force, acceleration, gradient of a scalar, vorticity, tensor (of the second order) represents a set of three vectors or nine scalar quantities all having something in common. Elastic deformation and elastic stresses are

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-23509215975306167372007-09-22T14:52:00.000-07:002009-09-06T07:48:20.615-07:00

Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure by means of various mathematical tools the theory of operator algebras, category theory, this article and book written by Hans Halvorson, Michael Muegeralgebraic quantum very interesting to who study Mathematical

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-35200911614055466922007-09-22T13:52:00.000-07:002007-09-22T14:52:16.627-07:00

this tutorial written by Jaganathan from The Institute of Mathematical Sciences, India, in this tutorial below you will get A very elementary introduction to quantum algebras is presented and a few examples of their physical applications are mentioned,Quantum algebras, or quantum groups, extend the domain of classical group theory and constitute a new and growing field of mathematics with vast

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-63989852162530285002007-09-22T06:41:00.000-07:002007-09-22T07:24:01.704-07:00

basically same as previous tutorial and previous book, this book explain about algebra, but this book have specialized in applied algebra in Network Flow,Electrical Networks, Economics, Chemistry and Application to Mechanics,at matrix chapter you will learn about application those matrices concept in game strategy.in vector chapter, you will learn Vectors in 2-Space and 3-Space Application

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-55649908579510651172007-09-22T05:29:00.000-07:002007-09-22T06:02:50.681-07:00

Linear algebra and matrix theory have long been fundamental tools in mathematical disciplines as well as fertile fields for research, this book written by Carl D. Meyer, in this book describe present classical and recent results of matrix analysis that have proved to be important to applied mathematic, in this book beginning by linear equation , Gaussian Elimination And Matrices, Gaus jordan

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-73488426524934161942007-09-22T04:01:00.000-07:002007-09-22T04:15:35.337-07:00

A First Course in Linear Algebra, this free book provide complete explanation about algebra, written by Robert A. Beezer Department of Mathematics and Computer Science University of Puget Soundbelow some of content from the book :Systems of Linear EquationsHomogeneous Systems of EquationsVectorsMatricesMatrix Inverses and Systems of Linear EquationsVector SpacesDeterminant of a MatrixSimilarity

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-63366812830150394602007-09-22T03:39:00.000-07:002007-09-22T03:55:48.099-07:00

an complete works and tutorial about algebra, ABSTRACT AND CONCRETE, this not only tutorial but more than book, this book writen by FREDERICK M. GOODMAN from University of Lowa, you will learn about algebra themes, cryptography, polyhendra symmetries, ismoteric groups and other, The book addresses the conventional topics: groups, rings, fields, and linear algebra, with symmetry as a unifying

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-16727131345680228382007-09-22T01:25:00.000-07:002009-09-06T07:51:05.663-07:00

trigonometric formula and table list is written by Thomas E. Price from Department of Theoretical and Applied Mathematics THE UNIVERSITY OF AKRON, more than 50 pages in pdf format, in last page you will find some exercises for trigonometric problem with solution, it's very helpfully,, here some list of the content:IntroductionThe Elementary IdentitiesThe sum and difference formulasThe double

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-61693246468895990902007-09-22T00:39:00.000-07:002009-09-06T07:49:32.231-07:00

table and formula of mathematic below provide by Department of Mathematics, UMIST, this very complete formula and table in pdf file type, includeLogarithmsTrigonometric IdentitiesComplex NumbersHyperbolic IdentitiesDerivativesIntegralsNumerical FormulaLaplace TransformsZ TransformsStatistical DistributionsFourier Series and TransformsVector FormulaMechanicsAlgebraic StructuresDownload here from

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-89820909733728203232007-09-13T03:41:00.000-07:002007-09-13T03:52:37.759-07:00

Trigonometry is one of the branch of mathematics that explain about triangles, , oscillations, circles and various waves, it is absolutely crucial and very important to much of geometry and physics. when we learn geometry or physics we'll alway find that trigonometry very useful, here some of the graph of Trigonometry functiony = sin xthis a basic of graph with variable x in y linegraph below is

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-67982321280521144532007-07-09T07:26:00.000-07:002007-07-09T07:28:40.702-07:00

This is a math class! Why are we writing?There is a good chance that you have never written a paper in a math class before. So you might be wondering why writing is required in your math class now.The Greek word mathemas, from which we derive the word mathematics, embodies thenotions of knowledge, cognition, understanding, and perception. In the end, mathematics is about ideas. In math classes at

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-77474224643756610182007-07-09T07:19:00.000-07:002007-07-09T07:26:45.696-07:00

Surface Area and Volume of a square PyramidA pyramid is any three-dimensional structure where the upper surfaces are triangular and converge on one point. The base of pyramids are usually quadrilateral or trilateral (but generally may be of any polygon shape), meaning that a pyramid usually has three or four sides. The measurements of these triangles uniformly classify the shape as isosceles and

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-52211589070109570102007-07-09T07:08:00.000-07:002007-07-09T07:17:25.215-07:00

SphereA sphere is a perfectly symmetrical geometrical object. In non-mathematical usage, the term is used to refer either to a round ball or to its two-dimensional surface. In mathematics, a sphere is the set of all points in three-dimensional space (R3) which are at distance r from a fixed point of that space, where r is a positive real number called the radius of the sphere. The fixed point is

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com1tag:blogger.com,1999:blog-3821162055272804663.post-52962583413219108022007-04-26T07:27:00.000-07:002007-04-26T07:34:20.721-07:00

Complex Numbers and Trigonometry A complex number is written as z = a + jb where a is the real part of z and b is the imaginary part of z. j is the square root of -1 so j2 = - 1. A complex number can also be seen as a vector in a two dimensional space with axes Re z and Im z. In this space the vector will extend from the origin to the point (a, b). Every complex number a + jb has a complex

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-81114738492134580682007-04-26T07:16:00.000-07:002007-12-03T03:15:20.220-08:00

this post you will find mathematics integral table of formula, In calculus, the integral of a function is an extension of the concept of a sum. The process of finding integrals is called integration. The process is usually used to find a measure of totality such as area, volume, mass, displacement, etc., when its distribution or rate of change with respect to some other quantity (position, time,

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-51753680090922510452007-04-26T07:03:00.000-07:002007-04-26T07:11:54.231-07:00

here are what you looking for, complete mathematics table and formula, this table and formula included :Greek alphabetindices and logarithmsTrigonometric identitiesComplex NumbersHyperbolic IdentitiesSeriesDerivativesIntegralsLaplace TransformsZ TransformsFourier Series and TransformsNumerical FormulaeVector FormulaeMechanicsAlgebraic StructuresStatistical DistributionsF - DistributionNormal

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-20027239858525486552007-04-14T19:53:00.000-07:002007-04-14T19:59:53.339-07:00

Trigonometry (from the Greek Trigona = three angles and metron = measure[1]) is a branch of mathematics which deals with triangles, particularly triangles in a plane where one angle of the triangle is 90 degrees (right angled triangles). Triangles on a sphere are also studied, in spherical trigonometry. Trigonometry specifically deals with the relationships between the sides and the angles of

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-38699694752691594422007-04-07T06:54:00.000-07:002007-04-07T07:14:22.269-07:00

Squaring a 2-digit number ending in 11. Take a 2-digit number ending in 1. 2. Subtract 1 from the number. 3. Square the difference. 4. Add the difference twice to its square. 5. Add 1. Example:1. If the number is 41, subtract 1: 41 - 1 = 40. 2. 40 × 40 = 1600 (square the difference). 3. 1600 + 40 + 40 = 1680 (add the difference twice to its square). 4. 1680 + 1 = 1681 (add 1). 5. So 41 × 41 =

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-54742317608571246572007-03-30T20:30:00.000-07:002007-03-30T20:31:30.643-07:00

Multiplying two 2-digit numbers (same 2nd digit) 1. Both numbers should have the same second digit. 2. Choose first digits whose sum is 10. 3. Multiply the first digits and add one second: X X _ _. 4. Multiply the second digits together: _ _ X X. Example: 1. If the first number is 67, choose 47 as the second number (same second digit, first digits add to 10). 2. Multiply the 1st

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-42034928728289398632007-03-30T20:26:00.000-07:002007-03-30T20:29:49.863-07:00

Multiplying two 2-digit numbers(same 1st digit) 1. Select two 2-digit numbers with the same first digit. 2. Multiply their second digits (keep the carry). _ _ _ X 3. Multiply the sum of the second digits by the first digit, add the carry (keep the carry). _ _ X _ 4. Multiply the first digits (add the carry). X X _ _ Example: 1. If the first number is 42, choose 45 as the

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-54419271346389180022007-03-27T07:21:00.000-07:002007-03-27T07:23:29.498-07:00

1. Squares of numbers from 26 through 50. Let A be such a number. Subtract 25 from A to get x. Subtract x from 25 to get, say, a. Then A2 = a2 + 100x. For example, if A = 26, then x = 1 and 1375/5 = 2750/10 = 275. Hence 262 = 242 + 100 = 676. Similarly, if A = 37, then x = 37 - 25 = 12, and a = 25 - 12 = 13. Therefore, 372 = 132 + 100·12 = 1200 + 169 = 1369. Why

hasnanhttp://www.blogger.com/profile/02590952024515915629noreply@blogger.com0tag:blogger.com,1999:blog-3821162055272804663.post-41671123509299786182007-03-27T07:09:00.000-07:002007-03-27T07:17:11.248-07:00

1. Multiplication by 5It's often more convenient instead of multiplying by 5 to multiply first by 10 and then divide by 2.For example, 137·5 = 1370/2 = 685.2. Division by 5Similarly, it's often more convenient instead to multiply first by 2 and then divide by 10.For example, 1375/5 = 2750/10 = 275.3.Division/multiplication by 4Replace either with a repeated operation by 2.For example, 124/4 =

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This formula and table of integral only a basic function and simple product of e, sin x and cos xrumus yang ada di halaman ini hanya memuat rumus dasar dan rumus dasar untuk nilai e, sin x dan cos x1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

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A mathematical constant is a quantity, usually a real number or a complex number, that arises naturally in mathematics and does not change. Unlike physical constants, mathematical constants are defined independently of any physical measurementthere is some of Mathematics Constants PhiDefinition :The constant p (Greek letter pi) is, classically, defined as the ratio of the circumference p of a

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