... >> int(h(t), t) ans = 1/4*t^4 56 Chapter 4: Beyond the Basics then the previous definition of h is substituted into the symbolic expression h(t) before the integration is performed Substitution ... 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...