For the function $f(x) = e^x+e^{-x}$ (A

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Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Relations and Functions

Question:

For the function $f(x) = e^x+e^{-x}$

(A) $f'(x) = e^x- e^{-x}$
(B) The critical point is $x = 0$
(C) The minimum value is 1
(D) $x = 0$ is the point of local minimum.

Choose the correct answer from the options given below:

Options:

(A), (B) and (D) only

(B), (C) and (D) only

(A) and (D) only

Correct Answer:

(A), (B) and (D) only

Explanation:

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