Exercise · ZW-ONE-SIDED-LIMITS-002 · ★☆☆ Basic
Compute \(\lim_{x\to 0^-}\,\frac{\left|{x}\right|}{x}\).
Choose one option.
Show answer
- A. \(-1\)
Exercise · ZW-ONE-SIDED-LIMITS-002 · ★☆☆ Basic
Choose one option.
For x < 0, |x| = −x, so \(\dfrac{|x|}{x}=-1\) and the limit from the left is \(-1\).
The left-hand limit uses only values \(x<a\) and the right-hand limit only values \(x>a\). The limit of \(f\) at \(a\) exists if and only if both one-sided limits exist and are equal.