Find the product of the complex numbers. Express your answer in trigonometric form.
21 = 7(cos(15") + sin(159))
z2 = 2(cos(110º) + isin(110)

Use the function nest to evaluate p(x) = 1 + x + · · · + x50 at x = 1.00001. (use the matlab ones command to save typing.) find the error of the computation by comparing with the equivalent expression q(x) = (x51 − 1)/(x − 1).

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?