Question 1138513

{{{f(x) = 8/x}}} at {{{x = -1}}}

{{{(d/dx)f(x) = -8/x^2}}}

at {{{x = -1}}}


{{{(d/dx)f(x) = -8/(-1)^2}}}

{{{(d/dx)f(x) = -8/1}}}

{{{(d/dx)f(x) = -8}}}