Question

let f(x)=1/(x+1) and g(x)=x^2-5 find all values of x for which f(g(x)) is discontinuous?? please show steps!

Answer 1

At +2 and -2, f(x) goes for a toss.
f(g(x))=1/x^2-4 Therefore at 2 and -2 f(x) is infinity.