Le forum de XCAS

ok

The output of xcas_mode (#) is currently a string of text, I think it is better to return a confirmation output of change 1 or Done and the warning message in between the cmd and output

Ideas To be able to restore the configuration mode for sotfware and not by hand, please add the option xcas_mode(-1), as it does autosimplify(-1) xcas_mode(-1) [enter] returns current xcasmode [0 or 1 or 2 or 3] And when exe xcas_mode(0 or 1 or 2 or 3) , returns the keyword Done as alias of 1, and n...

ok



Within a program with which command to set these modes?

cmd(tiMode/xcasMode)

win 10 64 bits and xCAS 64 bits with win 10 64 bits and xCAS 32 bits 1: desolve(y'=x^2+exp(2*x),x) [enter] [] Unable to isolate x in -exp(2*x)-x^2, switching to approx. solutions Solving by bisection with change of variable x=tan(t) and t=-1.57..1.57. Try fsolve(equation,x=guess) for iterative solve...

Win10-OS

1:
desolve(y'=x^2+exp(2*x),x,y) [enter]
(6*c_0+2*x^3+3*exp(2*x))/6

2:
desolve(y'=x^2+exp(2*x)) [enter]
(6*c_0+2*x^3+3*exp(2*x))/6

3:
desolve(y'=x^2+exp(2*x),y) [enter]
(6*c_0+2*x^3+3*exp(2*x))/6

but
4:
desolve(y'=x^2+exp(2*x),x) [enter]
closes

What is the difference of TImode (89/92) versus Xcas mode? I only notice that the output of the solvers are algebraic expressions and not lists of solutions Xcas mode 1: solve([ y = x^2, y = 2*x + 3 ],[x,y]) [enter] returns [[3,9],[-1,1]] TImode (89/92) 1: solve([ y = x^2, y = 2*x + 3 ],[x,y]) [ente...

1: desolve(y'=x^2+exp(2*x),x) [enter] Xcas closes

Another problem with the GUI is that in Windows 10, the Xcas window when started is partially hidden, I think it should start maximized

The [>] button at the end to display the following tabs, is possible?

Something that I think is a problem, is that when many sessions are opened, the tabs are lost, you must add please a button [>] to be able to explore them, also only shows the beginning and end of the file path and not all the path, /cygdrive/e/2017/MSc/Xcas/session01.xws -> /cygdrive/e/.../session0...

In the previous image you see that the lines overlap the arrays [], please lower one pixel for separations.

exp2list expects variable=something or combinations with or/and, from a solve result in TI mode. Not always outputs from ti-mode, also exp2list results, exp2list, list2exp These two orders must be reversible 1: exp2list(desolve(y'=x^2+exp(2*x),x),y)) (y=(sqrt(6)*sqrt(2*x^3-3*c_0)/3) or y=(-sqrt(6)*...

false is better ok Why was the constant c_0 lost? 1: desolve(y'+x*y=0); c_0*exp(-x^2/2) 2: exp2list(c_0*exp(-x^2/2)) exp(-x^2/2) lost c_0 -> [c_0*exp(-x^2/2)] 3: desolve((y*y') = (2*x^2),y) [√(-3*c_0+2*x^3)*√(6)/3,-√(-3*c_0+2*x^3)*√(6)/3] 4: list2exp([sqrt(6)*sqrt(2*x^3-3*c_0)/3,-sqrt(6)*sqrt(2*x^3...

Hello Bernard,

1: lines colors on Worksheet

The colors of the lines (black and blue, have too much contrast, please change for lighter colors, black -> gray and blue -> light blue

idea


thanks

Hello, I propose as a synonym of no solution, the word FALSE or the empty set symbol ∅ The next sentence does not return an expression, the pupils like to see the output as real as a textbook :mrgreen: list2exp(solve([x+y=3, x+y=5],[x,y]),[x,y]) returns [] -> FALSE or ∅ http://eonicasys.com.co/publi...