# Numerical Calculations

### #1

Posted 17 July 2005 - 08:39 AM

### #2

Posted 03 August 2005 - 11:02 AM

I had written some step-by-step numerical programs for my exam,like newton-rafson(1D,2D,3D),rangkota,calculating landa for a matrix and etc. , if there is anyone that has algorithms in this cases,i like to talk about them.

I tried to write such programs because I also need them. However, the lack of functions containing more than one command stopped me. The only way I found to emulate a function in ClassPad is to write a program that returns the answer as a global variable. For example, a simple program

NewtRaph(f,xguess)

implementing the Newton-Raphson method should calculate the root of the function f(x) by using x=xguess as the initial guess of the root. However, the root found cannot be returned to the main program, because a program cannot return anything. So, the program NewtRaph should return the answer by means of a global variable, say "root". After that, you should do a "DelVar root" to delete the global variable, if you do not need it anymore.

I simply refuse to write programs this way. If you have a better way to overpass the problem, I will be happy to know. But I think that there is no such way, bacause of the serious limitations of the ClassPad's basic....

### #3

Posted 07 August 2005 - 07:14 AM

### #4

Posted 02 September 2005 - 09:59 PM

http://science.r8.org/

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. Numerical Integration

Rectangular Rule

Trapezoidal Rule

MidPoint Rule

Simpton Rule

Rumberg Rule

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. Numerical Differentiation

Backward Method

Forward Method

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. Differential Equations

Taylor

Roung Kutta

Adams Bathforth

Predictor Corrector

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. Fourier Series Calculation and plot

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. a Laplace transform Function

. an activity on Inverse Laplace transform

### #5

Posted 22 December 2005 - 01:41 PM

Sorry, but "Landa" is wrong. You must write "Lambda".I had written some step-by-step numerical programs for my exam,like newton-rafson(1D,2D,3D),rangkota,calculating landa for a matrix and etc. , if there is anyone that has algorithms in this cases,i like to talk about them.

What kind of algorithms do you need? What's your major at university or highschool? "Maybe" I can help you.

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