Find $\frac { d y } { d x }$.

1. $y = e^{\operatorname{sin}(2x)}$

   Hint (a):

   Use the Chain Rule.

2. $y =\operatorname{ln}(\operatorname{cos}(2x))$

   Hint (b):

   Use the Chain Rule.

3. $y =\operatorname{ln} e^x$

   Hint (c):

   $\operatorname{ln}(e^x) = x$