Home |
Normal
Version IE Version |
Search | BBS | Guest Book | Site Map | Help | Contact us | About us |

IntroductionEssenceMemorizingUnderstandingSummarizingExamples
Example 1 ExercisesFinal thoughts |
Page 1 | Page
2 | Page 3 | Proof(s)
## Example 5--Page 2This time we don't multiply the left by . Instead, we multiply it by . Now, we want the first factor to be . To do so, we need change functions to . Try to simplify the terms on the top of first factor. If we use the Product to Sum formulas to convert them to addition, we'll get , from , ; and , from , , which yields like terms of . We want the first factor to be . Because the right side of the identity doesn't have a denominator, so we need to cancel . By using the Sum to Product formulas on the top of first factor, we get: Then we use a Double Angle formula to convert to and canceling . We have: |
|||

LWR

Questions? Comments? Contact
us.

© Copyright 1998 LWR, ThinkQuest team
17119. All rights reserved.