Fit data with the custom equation

[jdbaba]

HI I have a set of data and I want to fit those data with a particular equation format.

The equation format I need is as follows:
y=(1+a*x)^(-1.9/a)


I searched many inbuilt equation forms but I couldn't found that matches what I need. Is it possible to create the custom equation ourselves ?

Please reply as soon as possible. Thanks.

Jdbaba

[DPlotAdmin]

You can't have your own equation forms, but I could fairly easily add something like
y=(A+B*x)^C