# What is the equation of the line normal to # f(x)=sqrt(lnx)# at # x=4#?

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The equation of the line normal to f(x) = √(lnx) at x = 4 is y = -2/√(ln4) * (x - 4) + √(ln4).

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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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