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A: To expand by multiplying each term and adding them

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A: Topic: integration

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A: Explanation of the solution is given below...

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A: Since you have posted multiple questions i can do first question as per our company guidelines…

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A: We have to shown that tan^(-1)z =(i/2)log((1+z)/(1-z))

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A: Here you didn't given that the problem is minimum or maximum.

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Q: (-5

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