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annabelle
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#1
Report Thread starter 15 years ago
#1
How would you express 3/(x^3+1) as a partial fraction. Just a bit a of guidance on how to deal with the cubed part would be great...I don't really need the whole workings out (unless you really want to do it!).

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Jonny W
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x^3 + 1 = (x + 1)(x^2 - x + 1)

3 / [(x + 1)(x^2 - x + 1)]
= A/(x + 1) + (Bx + C)/(x^2 - x + 1)
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annabelle
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thanks!!!
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