Question
Sat February 18, 2012 By:

Integrate (x^2 + 1)/(x^3 + x^2 + x +1)

Expert Reply
Sat February 18, 2012
Factorize denominator : x3 + x2 + x + 1 = (x2 + 1)(x + 1)
So , (x2 + 1) gets cancelled and we get 1/(x+1)
I = log(x+1) + C
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