Graphic description: when x tends to 0, the absolute value of LIM X does not exist. Thank you! Graphic description

Graphic description: when x tends to 0, the absolute value of LIM X does not exist. Thank you! Graphic description

When x tends to 0 -, the value of the original formula is - 1; when x tends to 0 +, the value of the original formula is 1
So it doesn't exist