kerjakan dong, plisss

4. f'(x) = x^4 - 3x^3+ x - 5
5. f(x) = -6x² -24x -12
   f'(x) = -12x -24
6. f(x) = 4x² -20x + 25
     f'(x) = 8x -20
7. 10x^2/3