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Q.

The value of iloge(xi)+i2π+i3loge(x+i)+i42tan1x, x>0,i=1 is 

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Detailed Solution

iloge(xi)+i2π+i3loge(x+i)+i42tan1x iloge(xi)-iloge(x+i)-π+2tan1x

Let θ=tan-11x

iloge(xi)-iloge(x+i)=ilogxix+i=iloge2=2θ=2tan11x=2cot1x
 Required =2cot1xπ+2tan1x=2π2π=0

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