RE: Inplicit differentiation
- To: mathgroup at smc.vnet.net
- Subject: [mg63543] RE: [mg63533] Inplicit differentiation
- From: "Jose Luis Gomez" <jose.luis.gomez at itesm.mx>
- Date: Wed, 4 Jan 2006 04:35:22 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hello Fernando, this will do what you want. Notice that you must write y[x]: deq = D[x^2 * y[x] + (y[x] + x)^3 == 0, x] Solve[deq, y'[x]] Best Regards! M. en C. José Luis Gómez Muñoz (jose.luis.gomez at itesm.mx) http://homepage.cem.itesm.mx/lgomez/ -----Mensaje original----- De: Fernando Rodríguez [mailto:frr at easyjob.net] Enviado el: Miércoles, 04 de Enero de 2006 02:17 a.m. Para: mathgroup at smc.vnet.net Asunto: [mg63533] Inplicit differentiation 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!