Target Exam

CUET

Subject

-- Applied Mathematics - Section B2

Chapter

Calculus

Question:

If a function has a second derivative at $x=C$ such that $f(C) =0,f"(C) > 0,$ then at $x = C, f(x)$

 A. has local Maxima and local Minima

B. has local Minima

C. is absolute Maxima and absolute Minima

D. is either increasing or decreasing

Choose the correct answer from the options given below

Options:

B only

A, B only

C, D only

E, D only

Correct Answer:

B only

Explanation:

The correct answer is Option (1) → B only

because, $f(c)=0,f''(c)>0$, then at $x=c$, $f(x)$ is local minima because these are the only conditions needed, to become a local minima.