1.

Let f:RtoR be a differentiable function AAxinR . If the tangent drawn to the curve at any point xin(a,b) always lies below the curve , then

Answer»

`f'(x)GT0,f''(x)lt0AAx in(a,B)`
`f(x)lt0,f''(x)lt0AAx in(a,b)`
`f'(x)gt0,f''(x)lt0AAx in(a,b)`
`f(x)LE0,f''(x)le0AAx in(a,b)`

Answer :C


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