Let .
The derivative of is itself.
Then, apply the chain rule. Multiply by :
Don't know the steps in finding this derivative.
But the derivative is
The result of the chain rule is:
The answer is:
/ x\ x \x / x *(1 + log(x))*e
/ x\ x /1 2 x 2\ \x / x *|- + (1 + log(x)) + x *(1 + log(x)) |*e \x /
/ x \ / x\ x | 3 1 2*x 3 3*(1 + log(x)) x 3 3*x *(1 + log(x))| \x / x *|(1 + log(x)) - -- + x *(1 + log(x)) + -------------- + 3*x *(1 + log(x)) + -----------------|*e | 2 x x | \ x /