Question 1088794


 {{{f* g}}} if {{{f(x) = 28/x}}} and {{{g(x) = -8/(x - 7)}}}:

 {{{f* g=(28/x)(-8/(x - 7))}}}

 {{{f* g=(-8*28)/(x(x - 7))}}}

domain: will be all real numbers except values of {{{x}}} that make denominator equal to zero
and they are: 

{{{x(x - 7)=0}}}

=>{{{x=0}}} or
=>{{{x=7}}}


so, domain is:{ {{{x}}} element {{{R}}} : {{{x<>0}}} and {{{x<>7}}} }