MathWorks Application Support Engineer Intern interview questions

First part of interviewing process is exactly same. For the second part I chose signal processing and Matlab and C, and questions were about; Math -Rank of matrix -Eigenvalues of a matrix -Eigenvector of a matrix -Inverse of a matrix C -definition of Typedef -malloc and calloc -usage of <> and # -what is recursive function? Matlab -difference between function and script -concatenate matrix --open a file from command window -Compute numerical length of an array Signal Processing -Autocorreleation -Power Spectral Density and White Noise -Difference between FIR and IIR -Z Transform -Nyquist Sampling Rate

interview over the phone, some general question.