[x"]' = n. x0-l [x ] = 1 [c ] =0 [ u. v ] = u'. v + U.V u' . v - u.v 12. Use the derivative rules (above) to find the derivatives of the following functions. (4 pts each) Be sure to use good notation! a) f(x) = 4x +8Vx+ 10 b ) y = 7x3