Precalculus
Sum-to-Product and Product-to-Sum Formulas — Video Lecture (§7.4)
Video Lecture
·Streaming video
[ ] Watch the lecture before or after class
[ ] Pause and rewind any tricky step
[ ] Follow along with the guided outline
[ ] Re-watch before the exam
$7.99
A full lecture recording on Sum-to-Product and Product-to-Sum Formulas. Watch before or after class, pause and rewind any tricky step, and follow along with the guided outline.
Save more with a bundle
One-time purchase. After payment you'll land on a confirmation page — enter the email you used at checkout in your Library to download instantly.
Preview
"I've never been good at math. But with these outlines I actually followed along in class for the first time — and I passed."