# Log Derivatives : Chain Rule (4 Problems)

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Find the first derivative of the function.

1.) y= ln x^2

2.) y= ln sq rt x^4- 4x

3.) f(x)= x^2 ln x

4.) y=ln x/x+1

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#### Solution Preview

We know (lnx)'=1/x. Then we use the Chain Rule for the following functions.

1) y=ln x^2, then y'=1/x^2 * ...

#### Solution Summary

Logarithm derivatives are found using the chain rule.

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