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CBSE Class 12-science Answered

integration
Asked by | 24 Jan, 2009, 12:59: AM
answered-by-expert Expert Answer

multiply numinator and denominator with undre root sin x  and write sin x as  1 - cos 2 x   so the final integration is  I = sin x /  (sin x)  =  sin x  dx /  ( 1 - cos 2 x  )    

now let cos x = t  ===>  - sinx dx = dt ===> I = - dt /  (1 - t 2)   ====>  I = sin -1 t =  - sin -1 (cos x )

Answered by | 29 Jan, 2009, 05:41: PM

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