Computing for Beginners

Friday, 29 November 2013

LaTeX: Presentation on Math Mode

This post provides a presentation on the Math mode of LaTeX. The contents discussed in the presentation gives an introduction to the basics of Math mode. For LaTeX Beginners this might be a good introduction to Math mode. Download the presentation and view it in full screen mode or presentation mode.

Click here to download the Presentation.

C Program to Add Two Matrices Using Pointers

The C Program given with this post finds the sum of two matrices using pointers.
The prototype of function addmat is shown below.

int (*addmat(int (*p)[MAX], int (*q)[MAX]))[MAX];

The function addmat accepts two pointers to one dimensional arrays with size MAX as arguments and returns a pointer to a one dimensional array with size MAX.

Figure Below Shows a Sample Output

Click here to download the C Program.

C Program to Print the Upper and Lower Triangles of a Matrix

The C Program provided with this post prints the upper and lower triangles of a matrix.

Figure Below Shows a Sample Output

Click here to download the C Program.

Wednesday, 23 October 2013

C Program to Evaluate Functions Using Simpson's Rule

The Program provided in this post evaluates the definite integrals of sin(x), cos(x) and ex. This program is of no serious use. It simply illustrates the working of Simpson's Rule. Simpson's Rule is a method for numerical integration which helps us to find the numerical approximation of definite integrals like the one shown below.

Click here to view the Wikipedia Article on Simpson's Rule.

Figure Below Shows a Sample Output

Click here to download the C Program.

C Program to Evaluate Functions Using Trapezoidal Rule

The following Program evaluates the definite integrals of sin(x), cos(x) and e^x. I have to confess that the program does not serve any practical purpose other than illustrating the working of Trapezoidal Rule. Trapezoidal Rule is a technique for approximating the definite integral shown below.