How to Find the Exact Sum of a Series using Taylor Series | Series | Calculus | Glass of Numbers

In this video, we use a Maclaurin Series (Taylor Series centered at 0) for cosine to find the sum of the given series. The trick is to recognize which function has a Taylor series expansion of the same form. For the problem in this video, we can see that the series has the same form as the Taylor series for the cosine function. So, we can use it to find the sum.

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