Unformatted text preview: the point A ( x A , y A ) → substitute A into the equation of the tangent lines in Step 3. Then use the information from Step 2 ( f ( x P , y P ) = 0) to solve for x P . • Step 5 : After solving for x P , then ﬁnd y P . Notice : If you are asked to write the equations of these tangent lines, just go back to Step 3 and substitute each point ( x P , y P ) into the equation of the tangent line. Practice Problems : Question 4 in the Review Set for Test 2 and Problem 16 in Section 3.5. 1...
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- Fall '08
- Calculus, Tangent lines to circles