Differentiation Question 134

Question: $ \underset{x\to 0}{\mathop{\lim }}{{| x |}^{[cosx]}} $ is

Options:

A) 1

B) Does not exist

C) 0

D) None of these

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $ \underset{x\to {0^{+}}}{\mathop{\lim }}=\underset{x\to {0^{+}}}{\mathop{\lim }}{{(x)}^{0}}=1, $

$ \underset{x\to {0^{-}}}{\mathop{\lim }}{{(-x)}^{0}}=\underset{x\to {0^{-}}}{\mathop{\lim }}1=1 $