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Input:
sum(1/k!,k,0,oo)
Write:
`sum(1/k!,k,0,oo)`
Compute:
$$\sum _{k=0} ^ {oo} \frac {1}{(k)!}$$
Output:
$$\sum _{k=0} ^ {oo} \frac {1}{(k)!}== exp(1)$$
Result: $$exp(1)$$
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