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Given that f is a real valued differenti...

Given that f is a real valued differentiable function such that `f(x) f'(x) lt 0` for all real x, it follows that

A

`f(x)` is an increasing function

B

` f(x)` is a decreasing function

C

` |f(x)|` is an increasing function

D

` |f(x)|` is a decreasing function

Text Solution

Verified by Experts

The correct Answer is:
D
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