Question 415408
{{{f(x)=4x^0+(4x)^-1}}}

{{{f(4)=4(4)^0+(4 x 4)^-1}}}

{{{f(4)=4(1) +(16)^-1}}}

{{{f(4)=4 +1/16 }}}

{{{f(4)=4.0625 }}}