Fitting Data to an Equation with a Series

[dacruick]

I = I_{L} - I_{0} \left\{\exp\left[\frac{q(V + I R_{S})}{nkT}\right] - 1\right\} - \frac{V + I R_{S}}{R_{SH}}

The above equation represents the curve that I would like to fit my data to. However, 'I' is dependent on 'I', should I do this with a series?

 

[mathman]

It looks like you are trying to use Latex, but it isn't working.