The limit does exist.{{CMD_69}} {{CMD_70}}The limit does not exist because {{MATH_71}} is not defined the same way on either side of 0.{{CMD_72}} {{CMD_73}}The limit does not exist because {{MATH_74}} does not exist.{{CMD_75}} {{CMD_76}}The limit does not exist because {{MATH_77}}.{{CMD_78}} {{CMD_79}}