Re: [微積] 泰勒展開
※ 引述《suhorng ( )》之銘言:
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If there are two different power series P(x), Q(x) approaching to f(x)
then |P(x)-Q(x)| <= |P(x)-f(x)| + |Q(x)-f(x)|→0
hence P(u)-Q(u)=0 for ALL u in the convergent interval
then P(x)=Q(x)
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