MathAction SandBoxMaxima2

Topics

FrontPage
- AboutMaxima
 - SandBoxMaxima ...
- SandBox
 - SandBoxMaxima
 - SandBoxMaxima2 <-- You are here.

SandBoxMaxima3

Minimal Maxima

Here is an example from the paper "Minimal Maxima" by Robert Dodier:

WebSite:maxima.sourceforge.net/docs/tutorial/en/minimal-maxima.pdf

2 Solve an equation

maxima(%i2) eq_1:z+b*y+a*x = %pi

(%o2)

$\label{eq1} z+blist\y+alist\x=\pi$

(1)

maxima(%i3) eq_2:x-5*y+z = 0

(%o3)

$\label{eq2} z-5list\y+x=0$

(2)

maxima(%i4) s:solve([eq_1,eq_2],[x,z])

(%o4)

$\label{eq3} \left[ \left[ x=- {{\left(b+5\right)list\y-\pi}\over{a-1}} , z={{\left(b+5list\a \right)list\*y-\pi}\over{a-1}} \right] \right]$

(3)

maxima(%i5) length(s)

maxima<latex>
 \mbox{\tt\red(\mathrm{\%o5}) \black}1</latex>
(%i6) [subst(s[1],eq_1),subst(s[1],eq_2)]

maxima<latex>
 \mbox{\tt\red(\mathrm{\%o6}) \black}\left[ {{\left(b+5list\*a\right)list
 \*y-\pi}\over{a-1}}-{{alist\*\left(\left(b+5\right)list\*y-\pi
 \right)}\over{a-1}}+blist\*y=\pi , {{\left(b+5list\*a\right)list\*y-
 \pi}\over{a-1}}-{{\left(b+5\right)list\*y-\pi}\over{a-1}}-5list\*y=0
  \right] </latex>
(%i7) ratsimp(%)

(%o7)

$\label{eq4} \left[ \pi=\pi , 0=0 \right]$

(4)

maxima(%i8) s:solve(-1-9*D+6*C*D+(-1-3*D+4*C*D)*a+(1-2*C*D)*a^2+a^3,a)
(%i9) length(s)

maxima<latex>
 \mbox{\tt\red(\mathrm{\%o9}) \black}3</latex>

maxima<latex>
 \mbox{\tt\red(\mathrm{\%o9}) \black}
 \mbox{{}/var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/11447957390781607-25px.001.max{}}
 </latex>

maxima(%i11) display2d:false
(%i12) s
(%o12) [a = (-sqrt(3)*%i/2-1/2)*(sqrt(-D
                                       *((64*C^4-96*C^3+9*C^2)*D^3
                                        +(-384*C^3+768*C^2-360*C+27)*D^2
                                        +(64*C^2+240*C-396)*D-48))
                                /3^(3/2)
                                +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2+108*D
                                           +8)
                                 /27)
                                ^(1/3)
          +(sqrt(3)*%i/2-1/2)*(4*C^2*D^2-16*C*D+9*D+4)
           /(9*(sqrt(-D*((64*C^4-96*C^3+9*C^2)*D^3
                        +(-384*C^3+768*C^2-360*C+27)*D^2+(64*C^2+240*C-396)*D
                        -48))
               /3^(3/2)
               +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2+108*D+8)/27)
               ^(1/3))-(1-2*C*D)/3,
        a = (sqrt(3)*%i/2-1/2)*(sqrt(-D*((64*C^4-96*C^3+9*C^2)*D^3
                                        +(-384*C^3+768*C^2-360*C+27)*D^2
                                        +(64*C^2+240*C-396)*D-48))
                               /3^(3/2)
                               +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2+108*D+8)
                                /27)
                               ^(1/3)
          +(-sqrt(3)*%i/2-1/2)*(4*C^2*D^2-16*C*D+9*D+4)
           /(9*(sqrt(-D*((64*C^4-96*C^3+9*C^2)*D^3
                        +(-384*C^3+768*C^2-360*C+27)*D^2+(64*C^2+240*C-396)*D
                        -48))
               /3^(3/2)
               +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2+108*D+8)/27)
               ^(1/3))-(1-2*C*D)/3,
        a = (sqrt(-D*((64*C^4-96*C^3+9*C^2)*D^3
                     +(-384*C^3+768*C^2-360*C+27)*D^2+(64*C^2+240*C-396)*D
                     -48))
          /3^(3/2)
          +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2+108*D+8)/27)
          ^(1/3)
          +(4*C^2*D^2-16*C*D+9*D+4)/(9*(sqrt(
                                       -D
                                        *((64*C^4-96*C^3+9*C^2)*D^3
                                         +(-384*C^3+768*C^2-360*C+27)*D^2
                                         +(64*C^2+240*C-396)*D-48))
                                       /3^(3/2)
                                       +(8*C^3*D^3+C*(27*D^2-48*D)-48*C^2*D^2
                                                  +108*D+8)
                                        /27)
                                       ^(1/3))-(1-2*C*D)/3]
(%o12) "/var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/5114262280024159424-25px.002.max"

Subject: Be Bold !!

	( 15 subscribers )