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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