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## Pls solve it If $f(x)=ax^3+bx^2+cx+d,$where a,b,c,d are real numbers and $3b^2<c^2,$ is an increasing cubic function and g(x) $=af'(x)+bf''(x) +c^2,then$ (a) $\int^x_a$ g(t) dt is a decreasing function (b)  $\int^x_a$g(t) dt is an increasing function (c) $\int^x_a$ g(t) dt is a neither increasing nor a decreasing function (d) None of the above

### Asked By Subhash kandepi

Updated Thu, 20 Dec 2018 05:29 pm