x - x
d /x\ --|-| dx\x/
Apply the quotient rule, which is:
f(x)=xf{\left(x \right)} = xf(x)=x and g(x)=xg{\left(x \right)} = xg(x)=x.
To find ddxf(x)\frac{d}{d x} f{\left(x \right)}dxdf(x):
Apply the power rule: xxx goes to 111
To find ddxg(x)\frac{d}{d x} g{\left(x \right)}dxdg(x):
Now plug in to the quotient rule:
000
The answer is:
0