I1=int0^(pi/2)ln(sinx)dx ,I2=int(-pi/4)^...

`I_1=int_0^(pi/2)ln(sinx)dx ,I_2=int_(-pi/4)^(pi/4)ln(sinx+cosx)dxdot` Then (a)`I_1=2I_2` (b) `I_2=2I_1` `I_1=4I_2` (d) `I_2=4I_1`

`I_(1)=2I_(2)`

`I_(2)=2I_(1)`

`I_(1)=4I_(2)`

`I_(2)=4I_(1)`

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