1.

`(sin x)/(a^(2) +b^(2) cos^(2)x)` का समाकलन कीजिये -

Answer» Correct Answer - `-(1)/(ab)tan^(-1)((b cos x)/(a))`
`i = int(sinx)/(a^(2) +b^(2) cos^(2)x) dx = int (sinx)/(b^(2)[1+((b)/(a)cosx)^(2)])`
अब माना `(b)/(a)cosx=t rArr sin x dx = - (a)/(b)dt`


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