This is a start

FFT with plots and generating arrays ....
>> membrane >> logospin This movie is an animation of logo for The MathWorks spinning around. The logo is actually the primary vibration mode of a flexible membrane suspended in an L-shaped domain. File name: logospin.m >> movie(m,20) >> cruller >> crulspin >> movie(m,20) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % MAPLE % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % maple('diff(x^2,x)') mhelp('diff') maple('diff(1/(x+2),x);')