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Re: simple Problem: D[ ]

• To: mathgroup at smc.vnet.net
• Subject: [mg27352] Re: [mg27310] simple Problem: D[ ]
• From: BobHanlon at aol.com
• Date: Wed, 21 Feb 2001 03:17:55 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

f[x_] := x^2;

D[f[x], x]

2*x

Bob Hanlon

In a message dated 2001/2/20 3:20:22 AM, maier1 at sbox.tu-graz.ac.at writes:

>I use mathmatica the first time and have a problem with a deriviation:
>
>in a simple problem:
>
>f[x]=x^2
>abl=D[f[x],x]
>
>then Mathematica puts out f[x]'    , but not 2 x
>
>How does it work correctly?
>