Question: A function f is defined byf(x)=1+4x + x2+4x3+ x4+that is, its coefficients arec2n =1andc2n +1=4for alln 0.Find the interval of convergence of the series. (Enter

A function f is defined byf(x)=1+4x + x2+4x3+ x4+that is, its coefficients arec2n =1andc2n +1=4for alln 0.Find the interval of convergence of the series. (Enter your answer using interval notation.)1+4x1x2Find an explicit formula forf(x).

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