# What is the derivative of #ln(secx)#?

Here, the chain rule is applicable!

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and

We can now aggregate them in accordance with the chain rule statement:

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The derivative of ln(sec(x)) is sec(x) * tan(x).

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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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