Question 942025
{{{f(x)=4/x}}}



{{{f(x+h)=4/(x+h)}}}



{{{f(x+h)-f(x)=4/(x+h)-f(x)}}}



{{{f(x+h)-f(x)=4/(x+h)-4/x}}}



{{{(f(x+h)-f(x))/h=(4/(x+h)-4/x)/h}}}



The difference quotient is {{{(f(x+h)-f(x))/h=(4/(x+h)-4/x)/h}}}