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Let, f: R rarr R be defined by f(x) = 2x...

Let, `f: R rarr R` be defined by f(x) = 2x + cos x, then f

A

has a minimum at `x = pi`

B

has a maximum at x =0

C

is a decreasing function

D

is an increasing function

Text Solution

Verified by Experts

The correct Answer is:
D
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