# Given 1- cosx, how do you find the Taylor polynomial?

We should know that:

So

Which we could also write as:

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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- How do I use a power series to calculate a limit?
- How do you find the radius of convergence of a power series?
- How do you find the radius of convergence #Sigma (x^n)/(5^sqrtn)# from #n=[0,oo)#?

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