Calculating with value instead of symbol
- Subject: [mg2878] Calculating with value instead of symbol
- From: agroehn at email.uni-kiel.de (Andreas Groehn)
- Date: 4 Jan 1996 03:51:19 -0600
- Approved: usenet@wri.com
- Distribution: local
- Newsgroups: wri.mathgroup
- Organization: Institut fuer Weltwirtschaft
- Sender: mj at wri.com
I need to calculate the following sequence: W=x^2 Y[x_]:=x W If I differentiate Y[x] in respect to x, I get different solutions, depending on the employed function, Y'[x] or D[Y[x], x], because Y is defined as Y[x]=x W and not as Y[x]= x^3. How can I get Mathematica to work with the value of W to receive the Y[x]= x^3? Thank you very much for your help, Andreas Groehn