What is the definition of a jump discontinuity at x=ax=ax=a?
limx→a−f(x)\lim_{x \to a^-} f(x)limx→a−f(x) and limx→a+f(x)\lim_{x \to a^+} f(x)limx→a+f(x) both exist but are not equal
limx→af(x)\lim_{x \to a} f(x)limx→af(x) exists but f(a)f(a)f(a) is undefined
limx→af(x)=±∞\lim_{x \to a} f(x) = \pm \inftylimx→af(x)=±∞
f(a)f(a)f(a) is undefined and the limit does not exist