Question

10. If f(x)=[x]-
If f(x)=[x]-[4] .xer, where [x] denotes
the greatest integer function, then :
(1) Both lim f(x) and lim f(x) exist but are
not equal
(2) lim f(x) exists but lim f(x) does not exist
x 4-
x +4+
(3) lim f(x) exists but lim f(x) does not exist
X4-
(4) f is continuous at x = 4​

Answer 1

third part is correct ..