1.

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

Answer»

`a^(2)-3b-15le0`
`a^(2)-3b+15ge0`
`a^(2)-3b+15le0`
`agt0andblt0`

ANSWER :A::C


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