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suhanisingh92:
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someone has send me made in notebook and images is to be attached
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for b) take 1+ sinx = t
cosx dx = dt
dt/t( t+1) = dt/(t+ 1/2)^2 - 1/4
now there is formula of it dx/( x^2) - a^2
cosx dx = dt
dt/t( t+1) = dt/(t+ 1/2)^2 - 1/4
now there is formula of it dx/( x^2) - a^2
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