6 ---- 2/3 x
d / 6 \ --|----| dx| 2/3| \x /
The derivative of a constant times a function is the constant times the derivative of the function.
Let .
Apply the power rule: goes to
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 answer is: