2 x - - x
x - 2/x
Differentiate x−2xx - \frac{2}{x}x−x2 term by term:
Apply the power rule: xxx goes to 111
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: 1x\frac{1}{x}x1 goes to −1x2- \frac{1}{x^{2}}−x21
So, the result is: 2x2\frac{2}{x^{2}}x22
The result is: 1+2x21 + \frac{2}{x^{2}}1+x22
The answer is:
2 1 + -- 2 x
-4 --- 3 x
12 -- 4 x