| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_2_7_008.html | Chapter 1. Calculus Tutorial 2.7.008
| 4f7defffb11c0f994b000000 |
| http://digfir-published.macmillanusa.com/calc_tutorial/calc_tutorial_2_7_008_dlap.xml | DLAP questions | 4f7defffb11c0f994b000000 |