Suppose a function f(x)f(x)f(x) has the Maclaurin series ∑n=0∞xnn!\sum_{n=0}^{\infty} \frac{x^n}{n!}∑n=0∞n!xn. What is f(x)f(x)f(x)?
exe^xex
cos(x)\cos(x)cos(x)
sin(x)\sin(x)sin(x)
cosh(x)\cosh(x)cosh(x)