JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

Let

f(x)=\left\{\begin{array}{r}1+|x| ; x<-1 \\ {[x] ; x \geqslant-1}\end{array}\right.

, where [.] denotes the greatest integer function. Then

\mathrm{f}\{\mathrm{f}(-2.3)\}

equals -

View answer and explanation

Correct option: A

The correct answer is A (3) because f(-2.3) = 1 + |-2.3| = 3.3, and then f(3.3) = [3.3] = 3, where [.] denotes the greatest integer function.

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