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Mathematics 18 Online
OpenStudy (anonymous):

How do I solve this integral (I'll post it on a reply)

OpenStudy (anonymous):

\[\int\limits_{}^{}\sin (x)\times \tan (x) dx\]

OpenStudy (anonymous):

use integration by parts

OpenStudy (anonymous):

it's just int (sin^2/cos) and yes integration by parts

OpenStudy (anonymous):

use the general formula which is int u dv= uv int v du

OpenStudy (anonymous):

u= sin(x) dv=tan(x) dx

OpenStudy (anonymous):

agree with enorcrux and quakine that u need to use integration by part

OpenStudy (anonymous):

thnx now I see how the 3 answers are ok :) but the idea of enocrux is better than use integration by part with the tan(x)

OpenStudy (anonymous):

\[\int\limits_{?}^{?} u dv= uv- \int\limits_{?}^{?} v du\]

OpenStudy (anonymous):

sorry forget the minus sign but anyhow u know the idea

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