Write the partial fraction decomposition of each rational expression. (1) 3x/(x + 2) (x - 4) (2) (2x + 4)/(x^3 - 1)
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Originally Posted by Krizalid I see that the answer was found but how did you do it?
It's just writting the numerator by using factors of the denominator. Or make it as and find (I can't provide more help, probably someone else's gonna help a bit more.)
Originally Posted by Krizalid It's just writting the numerator by using factors of the denominator. Or make it as and find (I can't provide more help, probably someone else's gonna help a bit more.) This is exactly how to solve the problem. Then multiply both sides by , yielding: from which we deduce and of course the solution is a = 1, b = 2, as Krizalid indicated.
Originally Posted by icemanfan This is exactly how to solve the problem. Then multiply both sides by , yielding: Alternatively, you may just plug in x = 4 and then solve for b. Then plug in x = -2 and solve for a.
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