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Asked by Aly

Evaluate: sigma notation of (3cos k(pi) +1)
start value: k=0
end value: k=3
11 years ago

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Answered by Steve
cos k*pi = 1,-1,1,-1 so they add to zero and the sum is just 4
11 years ago
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Evaluate: sigma notation of (3cos k(pi) +1)
start value: k=0
end value: k=3

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