1.

If f(x)=x^(3)+ax^(2)+bx+5sin^(2)x, AA x in R is an increasing function, then …………..

Answer»

`a^(2)-3b-15gt0`
`a^(2)-3b+15lt0`
`a^(2)-3b-15lt0`
`a^(2)+3b+15lt0`

ANSWER :B


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