Question
Describe the error in finding the sum.$$\begin{aligned}\sum_{n=0}^{3}(-1)^{n} n ! &=(-1)(1)+(1)(2)+(-1)(6) \\&=-5\end{aligned}$$
Step 1
It is a sum of the product of $(-1)^n$ and $n!$ for $n$ ranging from 0 to 3. Show more…
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