Q. Let $f(2) = 4$ and$f^{'}(2) = 4$. Then, $\lim_{x \rightarrow 2}\frac{xf(2) - 2f(x)}{x - 2}$ is given by

A) 2
B) -2
C) -4
D) 3
Explanation

(c)
$\lim_{x \rightarrow 2}\frac{xf(2) - 2f(x)}{x - 2}$
$= \lim_{x \rightarrow 2}\frac{xf(2) - 2f(2) + 2f(2) - 2f(x)}{x - 2}$
$= f(2) - 2f^{'}(2)$
$= 4 - 2 \times 4 = - 4$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.