... returns the square of x. z = x.ˆ2; Typing sq(3) produces the answer 9, whether or not x or z is already defined in your Workspace, and neither defines them, nor changes their definitions, if they have ... returns the polar coordinates % of the point with rectangular coordinates (x, y). 58 Chapter 4: Beyond the Basics r = sqrt(xˆ2 + yˆ2); theta = atan2(y,x); If you type polarcoordinates(3,4), only the ... combine them element-wise. Specifically, if A and B are the same size, then A.*B is the element-by-element product of A and B, that is, the matrix whose i, j element is the product of the i, j...