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15th November 2008 09:05 #1
Maple.. .
Maple 12. (|B).
:
x1 + 5x2 - 6x3 = 0
x2 - x3 + 12x1 = 56
13x1 - 14x2 + 2x3 = 23
:
1 5 -6 | 0
12 1 -1 | 56
13 -14 2 | 23 1, 2, 3..
. ( ) . , . Augmented.
tools/tutors/linear algebra/matrix builder, . , , ":=matrix[(....)]..."..
, , , ..
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15th November 2008 11:34 #2
Matlab, Maple
. - linalg (Maple 11 ):
`flag` genmatrix .Code:> restart: with(linalg): > eq1 := x1 + 5*x2 - 6*x3 = 0; eq1 := x1 + 5 x2 - 6 x3 = 0 > eq2 := x2 - x3 + 12*x1 = 56; eq2 := x2 - x3 + 12 x1 = 56 > eq3 := 13*x1 - 14*x2 + 2*x3 = 23; eq3 := 13 x1 - 14 x2 + 2 x3 = 23 > eqlist := [eq1,eq2,eq3]; varlist := [x1,x2,x3]; eqlist := [x1 + 5 x2 - 6 x3 = 0, x2 - x3 + 12 x1 = 56, 13 x1 - 14 x2 + 2 x3 = 23] varlist := [x1, x2, x3] > M := genmatrix(eqlist,varlist,`flag`); [ 1 5 -6 0] [ ] M := [12 1 -1 56] [ ] [13 -14 2 23] > gaussjord(M); [ 4167] [1 0 0 ----] [ 889 ] [ ] [ 2847] [0 1 0 ----] [ 889 ] [ ] [ 3067] [0 0 1 ----] [ 889 ]Internet - it doesn't make you stupid, it just makes your stupidity more accessible to others
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15th November 2008 17:32 #3
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solve({-8*x+11*y-3*z = 5, -6*x-3*y+19*z = -3, 16*x-8*y-6*z = 0}, {x, y, z});
R1, R2.. e1, e2... ?
"solve.." :
R1 = 1
R2 = 2
1 = 20 .. .. ?
"solve.." x*(R1 + R2 ..) - y*R5... = e2 + e3 () :?
: , , .. "solve" . , - , 1, 2.., ..
restart; with(linalg); ? r1:=8:, r2:=6: .., . , r1,r2..
, "i" . ? .. i1, i2, i3 , x,y,z x1,x2,x3 () .Last edited by engen; 15th November 2008 at 21:38.




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