- #1

- 54

- 16

- Homework Statement
- Lecture slide (see photo)

- Relevant Equations
- See second last row on picture

I have a lecture slide that shows how to find S_x and S_y. I get all the steps except the last row.

Where did 1/2 come from? I think my linear algebra needs polishing.

Thanks!

Where did 1/2 come from? I think my linear algebra needs polishing.

Thanks!