[級數] 一題級數證明
Show that, ifΣ(a_k)x^k and Σ(b_k)x^k both converge to the same sum on
some interval, then a_k=b_k for each k
請問這有implies Σ(a_k)x^k=Σ(b_k)x^k 嗎
怎麼證明
thanks ^^
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