AP Calculus BC : 9.4 Defining and Differentiating Vector-  Valued Functions- Exam Style questions with Answer- MCQ

Question

If f is a vector-valued function defined by \(f(t)=(e^{-t},cost)\), then\( f”(t)=\)

(A)\(-e^{-t}+sint\)                      (B)\(e^{-t}+coxt \)                             (C)\((-e^{-t},-sint)\)                                  (D)\((e^{-t},cost)\)                                     (E)\((e^{-t},cost)\)