Re: Sin*Cos + Log
- To: mathgroup at smc.vnet.net
- Subject: [mg113241] Re: Sin*Cos + Log
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 20 Oct 2010 04:07:55 -0400 (EDT)
f[x_?NumericQ] := Sin[x]*Cos[x] + Log[x]
f /@ {x, 2, 2.}
{f[x], Log[2] + Cos[2] Sin[2], 0.314746}
x /: NumericQ[x] = True;
f /@ {x, y}
{Log[x] + Cos[x] Sin[x], f[y]}
Bob Hanlon
---- Sam Takoy <sam.takoy at yahoo.com> wrote:
=============
Hi,
I'm working on a project that involves manipulating lots of functions.
It would be much easier if I could manipulate functions without
evaluating them and then evaluate them at the end. To this end, is there
a way to endow
f = Sin*Cos + Log
with meaning and then somehow evaluate
f[x]?
Many thanks in advance,
Sam