Sometimes when I evaluate a derivative symbolically in mathcad of a certain function, it gives me 0 when its not.... Also, when I try to extract real and imaginary parts of a complex function array, if I extract element by element, it gives me a number, but if i extract all at once, it just gives me [1x1], its a problem because I cannot graph the function. Also, assign the SIZE of a different matrix onto another variable?
