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# How to integrate?

$\large{\displaystyle \int^{\frac{\pi}{2}}_{0} x \ln(\cos x) \sqrt{\tan x} \text{ d}x}$

plz post ur method and i dont know its answer

Note by Tanishq Varshney
1 year, 11 months ago

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Closed form has been posted on math-stack exchange, I will post the link soon. · 1 year, 11 months ago

I think that link will give a hint of how to do your problem. · 1 year, 11 months ago

Ok guys it was inspired from this · 1 year, 11 months ago

@Tanishq Varshney This seems to involve Complex Contour Integration. Unfortunately I don't know Contour Integration. @Kartik Sharma Please could you help? · 1 year, 11 months ago

I don't think it involves contour integration. It might be involving but then it is not that smooth to notice that easily. · 1 year, 11 months ago

I'll try it though I don't know if I can get an answer. · 1 year, 11 months ago

First look remind me of $$\frac{\beta'(a,b)}{4}$$ at $$a = -1/4, b = -3/2$$. But then there's that $$x$$ which reminds me of this and I think it is essentially the same problem. But since I've not solved that problem, I can only help you until here. There maybe solvers of that problem out there and they can surely help. · 1 year, 11 months ago

Are you sure it has a closed form? If yes, what makes you say that? · 1 year, 11 months ago

Check this link · 1 year, 11 months ago

Thanx for the link , can u plz reply to the post where i commented on one of ur solution · 1 year, 11 months ago

where. · 1 year, 11 months ago