Find dy/dx. 1. a. y= x7 + 3x5 + 1 b. y = x4 _ 4 X 5 c. V= 7x2 + 12. If f(t) = 3+3 - 2t2, find f'(2) 3. If f(x) = x5/2 , what is f"(4)? 4. Find the slope of the graph of y = (4 - x) , at x = 5d 5. Compute (z3 - 4zz + z-3) and evaluate at z = -2 dz