The limit does exist.{{CMD_41}} {{CMD_42}}The limit does not exist because {{MATH_43}} is flat near 4.{{CMD_44}} {{CMD_45}}The limit does not exist because {{MATH_46}} is very different from the values of {{MATH_47}} near 4.{{CMD_48}} {{CMD_49}}The limit does not exist because {{MATH_50}}.{{CMD_51}} {{CMD_52}}