http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_8_029.html\tChapter 1. \t50219a8cb11c0ffa07000000 http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_3_8_029_dlap.xml\tDLAP questions\t50219a8cb11c0ffa07000000