Re: Two related question. Question 1
- To: mathgroup at smc.vnet.net
- Subject: [mg57525] Re: [mg57498] Two related question. Question 1
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Tue, 31 May 2005 04:59:31 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
f=#1^2+#2&; c=f[#1,#2]^2&; f[a,b] a^2 + b c[a,b] (a^2 + b)^2 Bob Hanlon > > From: kazimir04 at yahoo.co.uk (Kazimir) To: mathgroup at smc.vnet.net > Date: 2005/05/29 Sun PM 09:00:17 EDT > Subject: [mg57525] [mg57498] Two related question. Question 1 > > I have two related question. Let me introduce a pure function > > f = #1^2 + #2 & > > Now. I want to make an operation over the function, for example to > find its square and to call the result (the expected function f = (#1^2 > + #2)^2 & ) c: > > c=f^2 > > However, I do not obtain this, as > > c[a,b] > > does not evaluate to (a+b)^2. Can anybody advise me how to obtain > such a function without long substitutions. I would like to obtain > something which is made for derivatives : > > In[11]:= > Derivative[1][f] > > Out[11]= > 2 #1& > > In[12]:= > Derivative[2][f] > > Out[12]= > 2& > > Regards > > Vlad > >