Which function has an infinite discontinuity at x=3x=3x=3?
f(x)=x−3f(x) = x-3f(x)=x−3
f(x)=(x−3)/(x−3)f(x) = (x-3)/(x-3)f(x)=(x−3)/(x−3)
f(x)=1/(x−3)f(x) = 1/(x-3)f(x)=1/(x−3)
f(x)=x2−9f(x) = x^2 - 9f(x)=x2−9