C: typecasting?, typedef, what is <stdio.h>?, malloc, calloc, global and local variables, pointers, what is null pointer? Math: Matrices, find determinant, what is rank? Significance of rank, Eigen values, vectors, angle between vectors, what are linear differential equations? Signal processing: Z transform, link between z and fourier transform, convolution, power spectrum - how do you calculate it? , stability region in Z argand diagram MATLAB - multiplication of matrices, size of matrix, how to access workspace variables? plot command