How do you take the Real and Imaginary parts of complex functions?; How can I solve the quadratic equation by completing the square?; I have two lists of points in space. How can I form the matrix of all distances from the first set to the second?; ReplaceAll versus ReplaceRepeated; Improper Integrals; When plotting a sequence of graphics, how can the display of intermediate graphics be prevented?; How does one solve a set of coupled integral equations?; How can one change the Input and Output names?