Within the restricted scope, the infinite power series is convergent and the formula is workable.

在规定的范围内该无穷级数收敛，并有计算公式成立。

youdao

Within the restricted scope, the infinite power series is convergent and the formula is workable.

在规定的范围内该无穷级数收敛，并有计算公式成立。

youdao