JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Understanding +4 | -1

[x]

denotes the integer part of

x

, then the domain of the function

f(x)=\frac{e^{-x}}{1+[x]}

View answer and explanation

Correct option: A

\mathbb{R}-[-1,0)

Option A is correct because the function is undefined when the denominator is zero, which occurs when [x] = -1, meaning -1 <= x < 0.

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