Re: A86: Symbolic program
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Re: A86: Symbolic program
Doesn't sqrtHOME intercept calls to print to the home screen?
At 12:21 AM 6/24/98 -0400, you wrote:
>
>I am just wondering about how others feel about the implementation of a
>symbolics program. I've been doing some pre-planning and thinking and
>experimenting, and all, and I have found that, imho, this would be the
>best way:
>
>>From the command prompt, the user types in a command like:
>::x^2+2*x::
>Note that the symbolic is surrounded by 2 colons on each side. I did
>this because (a) it is easily accessible by keyboard, (b) it woudn't
>ever be used by anyone in their right mind from the command prompt
>(someone confirm this), and (c) it should be pretty easy to intercept
>with sqrtPARSE.
>
>This is what I have in mind. The user types in the symbolic. sqrtPARSE
>intercepts it and evaluates it (I think that the best way would be to
>turn it into postfix notation, as it is fast and easy to work with, at
>least, that's what the hp48 does and it seems to do a pretty good job of
>it). Anyway, I am not sure about how to represent this in Ans or
>anything, so that the user can do something like sDer(Ans) or
>sExpand(Ans). Any ideas would help. What needs to happen is the
>postfix needs to be stored somehow, and then when it is displayed (if
>there is any way to intercept the display it would be good) it is
>converted back to algebraic.
>
>--
>Stephen Hicks
>mailto:shicks@mindspring.com
>ICQ:5453914
>IRC/AIM:Kupopo
>Hopemage:http://www.mindspring.com/~shicks/
>
>
>
// David Phillips
// mailto:electrum@tfs.net
// ICQ: 13811951
// AIM: electrum32
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