Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Relations and Functions

Question:

If $f(x)=\left\{\begin{matrix}\frac{\sin(1+[x])}{[x]}&;&for\,[x]≠0\\0&;&for\,[x]=0\end{matrix}\right.$, where [x] denotes the greatest integer ≤ x, then $\underset{x→0^-}{\lim}f(x)$ equals

Options:

1

0

-1

none of these

Correct Answer:

0

Explanation:

For −1 < x < 0, [x] = −1; so, $\underset{x→0^-}{\lim}\frac{\sin(1+[x])}{[x]}=\frac{\sin 0}{-1}=0$