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Let f(x)=x^3+ax^2+bx+5sin^2x be an incre...

Let `f(x)=x^3+ax^2+bx+5sin^2x` be an increasing function in the set of real numbers `R` Then `a` and `b` satisfy the condition

A

`a^(2) -3b -15 gt0`

B

`a^(2)-3b+15 le0`

C

`a^(2) +3b -15 lt0`

D

`a gt 0 & b gt 0`

Text Solution

Verified by Experts

The correct Answer is:
B
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