Find the derivative of f(x)= e^(4x) + e^-(4x)
2 answers:
Answer:

Step-by-step explanation:
To find this derivative, we will need to use the chain rule.
As there is a variable in the exponent we can use this formula:

In this case,
and 
This means that
and
respectively
This gives us 
Answer:
Step-by-step explanation:
note : (e^(u(x))' = (u(x))'e^(u(x)
f(x)= e^(4x) + e^-(4x)
f'(x) =4e^(4x) - 4 e^-(4x)
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