Students differentiate an equation in two variables with respect to one. They calculate points where the tangent line is horizontal, vertical, or oblique and use the graphing capacity of the TI-89 to display the graph of the implicit function.
Before the Activity
Students should have access to TI-89/TI-89 Titanium and TI-92 Plus/Voyage.
During the Activity
The document attached is the activity guide. Provide each student with a printed copy of this document.
After the Activity
Review student results and, as a class, discuss questions that appeared to be more challenging. Re-teach concepts as necessary.