- #1

morrowcosom

- 54

- 0

## Homework Statement

In D3, simplify f = u R u R

## Homework Equations

## The Attempt at a Solution

u(Ru)R=(uR)uR

u(uR^2)R=(uR)u2

uR=R

I am doing this for independent study, and the website I am using says the solution is 1=R

I just got started on dihedral groups and have no idea what in the heck to do. How do you tell which is a rotation or reflection before the solution arises and/or arrive with the above answer of R=1

Thanks