Hi guys,(adsbygoogle = window.adsbygoogle || []).push({});

I am new in this forum and really hope that somebody can help me.

I would like to show that the following function in concave of convex so I need to calculate the second derivative of Q(t) :

Q(t)=Integral[upper=T; Lower=0]{tF(t)q(p-st)}dt

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# Concavity of an integral function

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