In this interactive figure, you can move the point along the [br]curve, looking for a value of [math]x[/math] where the limit may fail to exist. [br]Replace the "?" to indicate the [math]x[/math]-value where the limit fails to exist.[br]Then, indicate the reason why the limit fails to exist there.

[i]Developed for use with Thomas' Calculus, published by Pearson.[/i]