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    Question 1e... What did you do?

    uh i did it differently i let u = (1+x^2)^1/2 and then after a few linese of working out , i got 2/(u-1)(u+1) and had to use partial fractions can anyone confirm if this way is correct as well in the end i got something like -ln3 - ln(2^1/2-1) + ln(2^1/2 +1)
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