A) has maximum at \[x=0\]
B) has minimum at \[x=\pi \]
C) is an increasing function
D) is a decreasing
Correct Answer: B
Solution :
\[f(x)=2x+\cos x,f'(x)=2-\sin x>0\] \[\therefore \]\[f(x)\]is a decreasing function.You need to login to perform this action.
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