# Going from proportional to equals...

1. ### Hazzattack

69
Hi guys,

This may well be a very trivial question but it isn't immediately obvious to me..

I know if you have x is proportional to y by adding a constant you can say;

x = cy

However, if we have x is proportional to y + z, is there a similar 'trick' that can be used?

Basically, i have an expression;

J(w) $\propto$ [w-w0]^1/2 + [w0 - w]^1/2

and want to set this equal.

2. ### arildno

12,015
x=c*(y+z)

1 person likes this.
3. ### Hazzattack

69
Ok great, so it is trivial. Thanks Arildno :)