Suppose that $f$ is a function given as $f(x)=2x1.$

Simplify the expression $f(xh).$

$f(xh)=$

Simplify the difference quotient, $\frac{f(xh)-f(x)}{h}.$

$\frac{f(xh)-f(x)}{h}=$

$$

The derivative of the function at $x$ is the limit of the difference quotient as $h$ approaches zero.

$f^{\text{'}}(x)=\underset{h0}{lim}\frac{f(xh)-f(x)}{h}=$

$$