/ x -x\ |E - E | log|--------| \ 2 /
log((E^x - E^(-x))/2)
Let .
The derivative of is .
Then, apply the chain rule. Multiply by :
The derivative of a constant times a function is the constant times the derivative of the function.
Differentiate term by term:
The derivative of is itself.
The derivative of a constant times a function is the constant times the derivative of the function.
Let .
The derivative of is itself.
Then, apply the chain rule. Multiply by :
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: goes to
So, the result is:
The result of the chain rule is:
So, the result is:
The result is:
So, the result is:
The result of the chain rule is:
Now simplify:
The answer is:
/ x -x\ |e e | 2*|-- + ---| \2 2 / ------------ x -x E - E
2 / x -x\ \e + e / 1 - ------------- 2 / -x x\ \- e + e /
/ 2 \ | / x -x\ | | \e + e / | / x -x\ 2*|-1 + -------------|*\e + e / | 2| | / -x x\ | \ \- e + e / / --------------------------------- -x x - e + e