Limits example (PreCalc)
Drag the "lim" point to new locations.
Drag the "X" point along the x-axis, observing what happens to the y value of f(x) as you approach the target value from both the left and right.
Rather than dragging the "X" point, you may also select it and on a keyboard:
- Arrow key left/right to move in increments of 0.01
- Ctrl-arrow key left/right to move in increments of 0.1
- Shift-arrow key left/right to move in increments of 0.001
On the default function with a removable discontinuity at x=6, click on the "hole" to toggle between f being defined and not defined at x=6.