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Math Forum » Discussions » Software » comp.soft-sys.math.mathematica

Topic: Mathematica and Lisp
Replies: 16   Last Post: Mar 7, 2013 3:58 AM

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David Park

Posts: 1,523
Registered: 5/19/07
Re: Mathematica and Lisp
Posted: Mar 6, 2013 5:54 AM
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Reverse the order of what? ArcTan of one argument has only one argument and
how can that be reversed? What has two arguments is the coordinate
specification {x, y} and they are not reversed in ArcTan[x, y].

It is the one argument form ArcTan[y/x] that seems poorly designed and would
probably only be used when one knows the quotient and not x and y - so there
wouldn't be anything to reverse.


David Park
djmpark@comcast.net
http://home.comcast.net/~djmpark/index.html




From: Richard Fateman [mailto:fateman@cs.berkeley.edu]

(simple example: why does Mathematica reverse the order of arguments to
arctan of 2 args?)

RJf






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