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Find a Maclaurin series for $f(x).($Use $\frac{(2n)!}{2^{n}n!(2n-1)}$ for $1*3*5$cdots$(2n-3).)$

$f(x)={\displaystyle \underset{0}{\overset{x}{}}}\sqrt[\phantom{2}]{1t^4}dt$

$f(x)=x\frac{x^5}{10}{\displaystyle \underset{n=2}{\overset{}{}}}$

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