[OS X TeX] Equation alignment in enumerated list

[Randy Scott]

Hi,

I'm trying to create an enumerated list, where the items listed are
equations. So far so good. I've been using $\displaystyle . . . to get my
equations to line up with the the text that accompanies the equations.

However, I need to make an entry that has the top line of a series of
equations aligned with the item marker, and then the subsequent lines
aligned at the equal sign with the top equation. For example:

1. f(x) = x^2 + 1/x
        = x^3/x + 1/x
        = (x^3+1)/x

I've tried a \parbox[t] but that doesn't align the baseline of the equation
with the item marker. I've tried \begin{align*} but that won't operate
inside a $\displaystyle arrangement.

Any ideas that you all could send my way would be appreciated.

Thanks,

Randy Scott
Santiago Canyon College
Orange, CA