-1/x^2
-1 --- 2 x
d /-1 \ --|---| dx| 2| \ 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: