# How do you find the derivative of #f(x) = 4x + piTan(x) #?

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To find the derivative of ( f(x) = 4x + \pi \tan(x) ), use the sum rule and the derivative of tangent function, which is ( \sec^2(x) ).

So, the derivative of ( f(x) ) is:

[ f'(x) = 4 + \pi \sec^2(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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