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Re: Through[Divide[f1, f2][x]]

• To: mathgroup at smc.vnet.net
• Subject: [mg130938] Re: Through[Divide[f1, f2][x]]
• From: Andrzej Kozlowski <akozlowski at gmail.com>
• Date: Mon, 27 May 2013 04:24:04 -0400 (EDT)
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On 26 May 2013, at 11:06, Ray Koopman <koopman at sfu.ca> wrote:

> Either of these will give you f1[x]/f2[x]:
> 
>  Divide@@{f1@#,f2@#}&@x
> 
>  Divide@@(#@x&)/@{f1,f2}
> 
> Sometimes it would be nice to have a "reverse map", that 
> applied each of a list of functions to a single argument, 
> instead of a single function to each of a list of arguments.

I am not sure I understand what you mean. Why doesn't Through do that?

Through[{f, g, h}[x]]

{f[x], g[x], h[x]}

Andrzej Kozlowski

• References:
  • Re: Through[Divide[f1, f2][x]]
    • From: Ray Koopman <koopman@sfu.ca>