[sage-support] Re: solving equations with parameters
Hi Simon. You surely know better than me :-) There are many ways for getting help over the internet. Kind regards. Dominique. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
Re: [sage-support] Re: solving equations with parameters
Le lundi 13 août 2018 22:39:04 UTC+2, William a écrit : > > On Mon, Aug 13, 2018 at 12:55 PM, Simon King > wrote: > > Hi Dominique, > > > > On 2018-08-13, Dominique Laurain > > wrote: > >> PS : use asksagemath.org > > > > -1! > > > > There are people (I, for instance) who hate the guts of > > ask.sagemath.org. > > Agreed... though for me it's mostly due to me getting banned half the time > I try to use it... > ;-)... > At this point, it would probably be a lot better to point people at > stackoverflow, and just suggest some tags they can use... > Alternate proposal : a "sage-questions" list similar to the present "sage-support". Strongly mark the former as dedicated to questions about the "normal" use of Sage, and the latter as dedicated to (apparent) anomalies of Sage behaviour. > > Seriously, I find the whole system of badges and tags > > and colourful symbols Distracting and childish... > and embedded editors One could dispense with their Neanderthal's Markdown... > both distracting and > > discouraging. I regularly have a look at sage-support, but haven't been > > on ask.sagemath.org in the last couple of years. > > > > While it is OK to keep ask.sagemath.org running, I find it very wrong > to > > forward people to ask.sagemath.org when they ask a question on > > sage-support (which clearly is *a* port for those seeking help). > > > > Best regards, > > Simon > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-support" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sage-support...@googlegroups.com . > > To post to this group, send email to sage-s...@googlegroups.com > . > > Visit this group at https://groups.google.com/group/sage-support. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > William (http://wstein.org) > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
[sage-support] Re: solving equations with parameters
Le lundi 13 août 2018 19:12:11 UTC+2, Dominique Laurain a écrit :
>
> One line answer :
>
> a,b,x,y = var('a,b,x,y') ; solve([ x + y == a, x - 2*y == b
> ],x,y,dontsolve='a,b')
>
You don't even need that. Just specify that you want to solve for x and y :
sage: var("x,y,a,b")
(x, y, a, b)
sage: solve([x+y==a,x-2*y==b],[x,y])
[[x == 2/3*a + 1/3*b, y == 1/3*a - 1/3*b]]
HTH,
> First statement is to declare symbolic vars a,b,x,y and second statement
> is for solving in symbolics x,y
>
> Dominique
>
> PS : use asksagemath.org
>
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Re: [sage-support] Re: solving equations with parameters
On Mon, Aug 13, 2018 at 12:55 PM, Simon King wrote: > Hi Dominique, > > On 2018-08-13, Dominique Laurain wrote: >> PS : use asksagemath.org > > -1! > > There are people (I, for instance) who hate the guts of > ask.sagemath.org. Agreed... though for me it's mostly due to me getting banned half the time I try to use it... At this point, it would probably be a lot better to point people at stackoverflow, and just suggest some tags they can use... > Seriously, I find the whole system of badges and tags > and colourful symbols and embedded editors both distracting and > discouraging. I regularly have a look at sage-support, but haven't been > on ask.sagemath.org in the last couple of years. > > While it is OK to keep ask.sagemath.org running, I find it very wrong to > forward people to ask.sagemath.org when they ask a question on > sage-support (which clearly is *a* port for those seeking help). > > Best regards, > Simon > > -- > You received this message because you are subscribed to the Google Groups > "sage-support" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-support+unsubscr...@googlegroups.com. > To post to this group, send email to sage-support@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-support. > For more options, visit https://groups.google.com/d/optout. -- William (http://wstein.org) -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
[sage-support] Re: solving equations with parameters
Hi Dominique, On 2018-08-13, Dominique Laurain wrote: > PS : use asksagemath.org -1! There are people (I, for instance) who hate the guts of ask.sagemath.org. Seriously, I find the whole system of badges and tags and colourful symbols and embedded editors both distracting and discouraging. I regularly have a look at sage-support, but haven't been on ask.sagemath.org in the last couple of years. While it is OK to keep ask.sagemath.org running, I find it very wrong to forward people to ask.sagemath.org when they ask a question on sage-support (which clearly is *a* port for those seeking help). Best regards, Simon -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
[sage-support] Re: solving equations with parameters
One line answer :
a,b,x,y = var('a,b,x,y') ; solve([ x + y == a, x - 2*y == b
],x,y,dontsolve='a,b')
First statement is to declare symbolic vars a,b,x,y and second statement is
for solving in symbolics x,y
Dominique
PS : use asksagemath.org
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