# What is the derivative of #sec((x^2)+3x)#?

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The derivative of ( \sec((x^2)+3x) ) is ( \frac{d}{dx} \sec((x^2)+3x) = 2x\tan(x^2+3x) + 3\sec^2(x^2+3x) ).

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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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