Lemma
EasySequences & series
#1484 · Algebra · Sequences & series

Coefficient of a rational fraction

Find the coefficient of in the expansion of .

~5 minAnswer checked instantlybinomial theorempower series

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XIV. Binomial Theorem: Any Index, Examples XIV.c, No. 1

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).