How to make "Is x zero or nonzero?" in my function
Subject: How to make "Is x zero or nonzero?" in my function
From: Alexander Klimov
Date: Mon, 11 Jun 2012 10:21:22 +0300
On Mon, 11 Jun 2012, Evgeniy Maevskiy wrote:
> In my Maxima-function I have to ask the user
>
> Is x zero or nonzero?
> Is x positive or negative?
>
> Something like in the computation of integrate(t^x,t)
Function: asksign (<expr>)
First attempts to determine whether the specified expression is
positive, negative, or zero. If it cannot, it asks the user the
necessary questions to complete its deduction. The user's answer
is recorded in the data base for the duration of the current
computation. The return value of `asksign' is one of `pos',
`neg', or `zero'.
Btw, it is a good idea to create a new thread for a new topic instead
of replying and changing the subject.
--
Regards,
ASK