Find the value of the sum.\\ $\sum_{i=1}^{4} x_i$, if $x_1 = 4$, $x_2 = -8$, $x_3 = 7$, $x_4 = -1$
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Step 1: The given sum is \sum_(i=1)^4 x_(i), where x_(1)=4, x_(2)=-8, x_(3)=7, and x_(4)=-1. Show more…
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