Why partial fraction decomposition of $frac{1}{s^2(s+2)}$ is $frac{A}{s}+frac{B}{s^2}+frac{C}{(s+2)}$?
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Can someone please explain why: $$frac{1}{s^2(s+2)}=frac{A}{s}+frac{B}{s^2}+frac{C}{(s+2)}$$ And not: $$frac{1}{s^2(s+2)}=frac{A}{s^2}+frac{B}{(s+2)}$$ I'm a bit confused where the extra s term comes from in the first equation.
algebra-precalculus partial-fractions
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edited Apr 3 at 3:15
user21820
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asked Apr 3 at 0:58
stuart stuart
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