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Power Serieseasy
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If f(x)=∑n=0∞cnxnf(x) = \sum_{n=0}^{\infty} c_n x^nf(x)=∑n=0∞​cn​xn has a radius RRR, what is the radius of convergence of f(kx)f(kx)f(kx) where kkk is a non-zero constant?