The following identity is a bit harder to prove if you don’t see a particular step. Complete Try This 5 with a group if possible, but alone if necessary.
Consider the identity .
Prove the identity.
Save your responses and a record of your discussion in your course folder.
Compare your proof to the proofs of other students. Your comparison can include considerations like length, difficulty, clarity, and the strategy used.
If required, save your responses and a record of your discussion in your course folder.
Review the list of strategies provided just before Try This 3.