Re: combinations of pure functions
- To: mathgroup at smc.vnet.net
- Subject: [mg16616] Re: combinations of pure functions
- From: Paul Abbott <paul at physics.uwa.edu.au>
- Date: Fri, 19 Mar 1999 12:53:47 -0500
- Organization: University of Western Australia
- References: <7cldkq$9n2@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Gianluca Gorni wrote: > Unfortunately the suggestion fails if we just change + > into - in op: > > op2 = Identity - (D[#,x]&) > > What can one do? Move the minus sign: op2 = Identity + (D[-#,x]&) Through[op2[x^2],Plus] Cheers, Paul ____________________________________________________________________ Paul Abbott Phone: +61-8-9380-2734 Department of Physics Fax: +61-8-9380-1014 The University of Western Australia Nedlands WA 6907 mailto:paul at physics.uwa.edu.au AUSTRALIA http://www.physics.uwa.edu.au/~paul God IS a weakly left-handed dice player ____________________________________________________________________