JEE MATHEMATICS MCQ: FUNCTIONS

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Application +4 | -1

f: R \rightarrow R

is defined by

f(x)=2 x+|x|

, then

f(3 x)-f(-x)-4 x

equals

View answer and explanation

Correct option: D

2 f(x)

Option D (2 f(x)) is correct because after evaluating f(3x) and f(-x) and simplifying, the expression equals 2f(x).

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