7. Find F '(x) for F(x) = [V1+t2 dt . (5 points) O 1 X 12 V1+x2 O 1 O V1+ x 2 None of these 8. Find F '(x) for F(x) = [V1-t2 dt . (5 points) O X /1-x2 O V1-x2 O -V1-x2 O None of these\f11. Find the antiderivative of f(x) = $x2 . (5 points) O 3 + C O 2x 1/5 +C 5 O 5x7/5 7 + C None of these 12. Find the antiderivative of f(x) = ex. (5 points) Oex + C O C-ex O Ln(ex) + C O None of these