# What is the derivative of #y=arccos(x )#?

The answer is:

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The derivative of ( y = \arccos(x) ) is ( -\frac{1}{\sqrt{1-x^2}} ).

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The derivative of (y = \arccos(x)) is (-\frac{1}{\sqrt{1-x^2}}).

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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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