Question

What is the domain of `sqrt((x-1)/(x+3))`?

Answer 1

Domain: `(-oo,-3)uu[1,+oo)`
or some equivalent notation

Explanation:

#{: (underline("If"),color(white)("XXX"),underline(x<-3),underline(x=-3),underline(-3 < x < 1),underline(x>=1)), (sqrt((x-1)/(x+3))" is",,"Real","Undefined","Imaginary","Real") :}#