Which of the following functions have a jump discontinuity at x=0x=0x=0?
f(x)=1xf(x) = \frac{1}{x}f(x)=x1
f(x)=∣x∣xf(x) = \frac{|x|}{x}f(x)=x∣x∣
f(x)=exf(x) = e^xf(x)=ex
f(x)=⌊x⌋f(x) = \lfloor x \rfloorf(x)=⌊x⌋