How do you find the domain of #f(x)=8/(x+5)#?
May 18, 2017
The denominator of f(x) cannot be zero as this would make f(x) undefined. Equating the denominator to zero and solving gives the value that x cannot be.
#"solve "x+5=0rArrx=-5larrcolor(red)" excluded value"#
#"domain is " x inRR,x!=-5#