Question 1 (1 point) Which of the following are all the critical numbers of f(x) = V(1 -x2) V -- O a) o O b) - 5 , 5 O c) 5, 0 O d) - 1, 0, 1 Oe) None of the above Question 2 (1 point) If f (x) = x3 ( x2 - 14 ), then fis decreasing on which one of the following intervals ? O a) (-00 , - V2 ) U ( V2, 00) O b) ( - 0o , 0 ) u ( 12, 0o ) O c) ( - V 2, 0 ) U ( 0 , V2 ) O d) ( - VZ, 0) O e) ( v2, 0 )