sin" 7n) n2 (-1)" 2n + 7 (-1)" n + 4
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Step 1
First, we need to simplify the expression inside the sine function. We can use the formula for the sum of a geometric series to simplify (-1)^2n + 7(-1)^n + 4: (-1)^2n + 7(-1)^n + 4 = (1/2)((-1)^n + 2) + 7(-1)^n Show more…
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