# How do you find the Maclaurin Series for #(cos(2x^(2))+1) / x^(2)#?

There are multiple approaches to this; the "hardest" approach involves finding the various derivatives using first principles, but there are other approaches as well.

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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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