1 -- 2 x
1/(x^2)
Let u=x2u = x^{2}u=x2.
Apply the power rule: 1u\frac{1}{u}u1 goes to −1u2- \frac{1}{u^{2}}−u21
Then, apply the chain rule. Multiply by ddxx2\frac{d}{d x} x^{2}dxdx2:
Apply the power rule: x2x^{2}x2 goes to 2x2 x2x
The result of the chain rule is:
The answer is:
-2 ---- 2 x*x
6 -- 4 x
-24 ---- 5 x