Deriving absolute error equation

1. Nov 11, 2008

AcecA

1. The problem statement, all variables and given/known data
I need to derive an error equation from the following equation...
$$\frac{e}{m}$$ = $$\frac{2V}{B^{2}R^{2}}$$

2. Relevant equations
Just... basic... derivation rules...

3. The attempt at a solution
I did try, just don't know how to put the stupid attempt in LaTeX....

I'm stuck at the "2V" part because, in our package, there is no description on how to deal with constants. And I was told to treat $$\frac{e}{m}$$ as a single variable. Thanks, guys :)

Last edited: Nov 11, 2008
2. Nov 11, 2008

LowlyPion

If you are dealing with error propagation then where you are multiplying by a constant you add its relative error like anything else ... but of course it's relative error or absolute error for that matter is necessarily 0.

3. Nov 11, 2008

AcecA

Okie. Now I feel stupid at not realizing something so simple. Thanks :)