Q5 of 271 Page 322

Integrate the rational functions.

Let

⇒ 2x = A(x + 2)+ B(x + 1) …(1)


Substituting x = -1 and -2 respectively in equation (1), we get,


A = -2, B = 4


Thus,




= 4log|x + 2| -2log|x + 1| + C


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