Differentiate using the chain rule, which states that is where and .
To apply the Chain Rule, set as .
Differentiate using the Exponential Rule which states that is where =.
Replace all occurrences of with .
The derivative of with respect to is .
Simplify the expression.
Move to the left of .
Rewrite as .
Reorder the factors of .
Find the Derivative – d/dx 3^(cos(x))