0
votes
1answer
26 views

–°hange the order of integration in the double integral

I have to change the order of integration in this double integral I've decided to divide it in two similar areas D1 and D2 And I've got the following result Can You chech it and state my ...
0
votes
1answer
54 views

Cannot solve indefinite integral

can You help me with this indefinite integral $$\int \dfrac{2^{x + 1} + 5^x}{10^x} dx$$ What to use. direct integration or substitute of variables Thanks
0
votes
2answers
49 views

Help me with indefinite integral

Can You help me with it $$\int\ \frac{tg^2 x}{ \cos^2x}\ dx$$ I've already tried to decompose tg. But I don't know what to do after that.
5
votes
1answer
4k views

Indefinite Integral for $\cos x/(1+x^2)$

I have been working on the indefinite integral of $\cos x/(1+x^2)$. $$ \int\frac{\cos x}{1+x^2}\;dx\text{ or } \int\frac{\sin x}{1+x^2}\;dx $$ are they unsolvable(impossible to solve) or is there a ...