What is the sum from n=0 to infinity of cos(5npi) ?

The sum from n=0 to infinity of cos(5npi) is diverges

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sum from n=0 to infinity of cos(5npi)

n = 0 \sum \infty cos (5 nπ)

diverges

Solution steps

n = 0 \sum \infty cos (5 nπ)

Apply Series Divergence Test:

diverges

= diverges

f (x) = ln^{5} (x)

y^{^{'}} - 4 y = 10 sin (2 t)

\int (\frac{2}{y + 1})^{2} d y

f (x) = x^{2} - 8, (- 2, - 4)

\frac{4}{( s ^{4} + 4 )}

What is the sum from n=0 to infinity of cos(5npi) ?
The sum from n=0 to infinity of cos(5npi) is diverges