Instructions

• Hit the DRAW NEW GRAPH button to start a new problem with a new graph.
• Hit the NEXT APPROACH POINT button to go to the next approach point without going to a new graph. (Approach points selected in this manner are selected in random order.)
• Hit the CHOOSE APPROACH POINT button after selecting a point from the pull down menu to select an approach point.
• Note that the NEXT APPROACH POINT button blanks out after you after seen all four approach points.
• Click on 1, 2, 3, 4, "infinity", "- infinity", or "does not exist" to select your choice to the three limit questions (right-handed limit, left-handed limit, and two-sided limit).
• Click on "Continuity", "Removable discontinuity", "Jump discontinuity", "Infinite discontinuity", or "Other discontinuity" to select your choice for the type of continuity at the approach point.
• Note that a green outline appears around a correct choice, whereas an incorrect choice fades out.
• You may keep selecting more choices.
• You can hit the RESCALE AXES button after selecting the domain and range from the pull down menus to rescale the axes.
• You can hit the DEFAULT SCALE to return to the default scale.
• The RESCALE AXES button can also be used to refresh the graph.
• The CHOOSE APPROACH POINT button can also be used to refresh all the choices.