Input:
toseries(sin(x))
Write:
`toseries(sin(x))`
Output:
$$convert \ to \ series :\\ \ sin(x)== \sum _{k=0}^\infty \frac {{(-1)}^{k}}{(1+2\ k)!}\ ({x}^{1+2\ k})$$
Result: $$\sum _{k=0}^\infty \frac {{(-1)}^{k}}{(1+2\ k)!}\ ({x}^{1+2\ k})$$
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