How to use a graphing calculator to find the limit of x | x - 4 | as x approaches -1?

Question

How to use a graphing calculator to find the limit of       x          |              x        -        4            |       as x approaches -1?

Hunter Hendricks · Accepted Answer

Use your calculator (or other graphing software/app) to plot the graph, then look to see what happens at

x = - 1

Hence, If

f (x) = x | x - 4 |

, then as f(x) is continuous, the limit is

f (- 1) = - 5

How to use a graphing calculator to find the limit of x | x -...