How to invert a function of several variables?

*To*: mathgroup at smc.vnet.net*Subject*: [mg114612] How to invert a function of several variables?*From*: Арсеньев Сергей <serge-ars at yandex.ru>*Date*: Fri, 10 Dec 2010 02:30:19 -0500 (EST)

Honorable ladies and gentlemen, I need to invert a real function of two real variables f(x, y) with respect to the first variable x, while the second variable y is fixed. The function is rather difficult, so Mathematica can't invert it symbolically, and I need at least to invert it numerically. Thank you. serge-ars at yandex.ru