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Let u=int0^1("ln"(x+1))/(x^2+1)dxa n dv=...

Let `u=int_0^1("ln"(x+1))/(x^2+1)dxa n dv=int_0^(pi/2)ln(sin2x)dx ,t h e n` `u=-pi/2ln2` (b) `4u+v=0` `u+4v=0` (d) `u=pi/8ln2`

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