# Solving for the variable M?

I have this equation and I'm trying to solve for $M$ but it is not working out. Can someone please help me?

$$\frac{M}{M^2 + 1} = \epsilon .$$

• $\epsilon M^2 - M + \epsilon = 0$ ? – Claude Leibovici Mar 28 '14 at 6:46

Multiply the denominator out to get $M=\epsilon M^2+\epsilon$ and then use the quadratic equation.