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Inplicit differentiation

• To: mathgroup at smc.vnet.net
• Subject: [mg63533] Inplicit differentiation
• From: Fernando Rodríguez <frr at easyjob.net>
• Date: Wed, 4 Jan 2006 03:17:10 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

How can I ask Mathematica to differentiate a function if y is not easily 
isolated? For instance:

x^2 y + (y + x)^3 = 0

If I call D[x^2 y + (y + x)^3 == 0, x] it won't return the correct answer, 
as it will consider y a constant.

Thanks!

• Follow-Ups:
  • Re: Inplicit differentiation
    • From: Pratik Desai <pdesai1@umbc.edu>