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# Calculus Of the day

Hai friends... Long time not stay in here. Let, discusse about calculus. I have not idea for solve problem bellow. Thank you for your hint...

$$\displaystyle \lim_{n \to \infty} n^4 \int_{0}^{1} \frac{ln(1-x)ln^{3} (x)}{1+x^{-n}} dx$$

Note by Pebrudal Zanu
3 years, 2 months ago

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Hint : set $$x^n=t$$.

- 3 years, 2 months ago

Next hint...

- 3 years, 2 months ago

After you do the sum the integral would be : $\int_0^1 \frac{t^{1/n} \ln(1-t^{t/n}) \ln^3(t)}{1+t} \ \mathrm{d}t$ Now, can you see the limit ?

- 3 years, 2 months ago