# How do you find the derivative of #cos(1-2x)^2#?

Use the chain rule :

A first iteration of the chain rule reduces the exponent of the cosine using the power rule.

Lastly, apply the power rule to the remaining derivative statement.

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To find the derivative of ( \cos{(1-2x)}^2 ), you can use the chain rule and the power rule. The derivative is ( -4\cos{(1-2x)}\sin{(1-2x)} ).

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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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