# Thread: Transposing a formula: solve for R

1. ## Transposing a formula: solve for R

Hi, can someone help me with how to solve for R? Thanks a lot for your help.

1/wavelength = R(1/4 - 1/n^2)

2. Originally Posted by jsu03
Hi, can someone help me with how to solve for R? Thanks a lot for your help.

1/wavelength = R(1/4 - 1/n^2)
as long as $\displaystyle n \ne 2$, just divide both sides of the equation by $\displaystyle \frac 14 - \frac 1{n^2}$