MathWorks Interview Question

Linear Algebra: What is a singular matrix? What is a symmetric matrix? Invert a 2x2 matrix? Computer Programming (C): What does #include <stdio.h> do? What is the difference between global and local scope? What is a pointer? What is the difference between & and * sign? What is malloc? DSP: What is an LTI system? What is a causal system? What is convolution? Computer Hardware: What is the difference between Harddrive and RAM? Describe computer architecture? (What is that???) Matlab: How do you do transpose? How to plot a vector? 2 vectors on the same graph?