Differentiate term by term:
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 derivative of a constant times a function is the constant times the derivative of the function.
Let .
Then, apply the chain rule. Multiply by :
Apply the power rule: goes to
The result of the chain rule is:
So, the result is:
The result is:
Now simplify:
The answer is:
/ 2\ 2 \x / ----- - 2*x*8 *log(8) ___ \/ x
/ / 2\ / 2\ \ | 1 \x / \x / 2 2 | -|---- + 2*8 *log(8) + 4*8 *x *log (8)| | 3/2 | \x /