1. :
1.1.
2. :
( MATHCAD 20 ):
Solve ()
Simplify()
.
, , .
1. .
2. MATHCAD
1
.
.
:
1) ( rref());
2) , , ;
3) ;
4) -1 ( -1= -1=);
5) =-1b ;
6) lsolve(A,b), ;
7) given find() .
1) rref(_b)).
augment (A,b) , rref(_b) , , . A_reduced .
ORIGIN:=1
A_b:=augment(A,b) A_reduced:= rref(_b)
A_reduced = x:= A_reduced x=
2) , , :
1:= 2:= 3:=
1 :=b 2 :=b 3 :=b
:=|A| :=|A1| :=|A2| :=|A3|
3) :
x=
4) -1:
-1A= A -1 =
, Format Result Fraction.
5) =-1b :
:=-1b x=
6) lsolve(A,b):
:=lsolve(A,b) x=
7) given find()
, b - ( ) . given =b (find()) Ctrl+=:
ORIGIN:=1
Given
=b
x:= find(x)x=
2
.
|
|
rref(_b), , A_reduced , , :
ORIGIN:=1
A_b:=augment(A,b)
A_reduced:=rref(_b)
A_reduced =
1 3 () , 2 4 .
(2 =0 4 =0) . . : , 2=1 4=0; , 2=0 4=1:
( 0) . .
Given
=b
2=0
4 =0
0:=Find(x)
( 1)
Given
=b
2=1
4 =0
1:=Find(x)
( 2)
Given
=b
2=0
4 =1
1:=Find(x)
, :
x(t):=x0+t1x1+ t2x2,
t1 t2 x(t) ; rnd(x), (0,):
3
rref(_b), A_reduced, 1 .
0x1+ 0x2 + 0x3 + 0x4 =1
ORIGIN:=1
A_b:=augment(A,b)
A_reduced:=rref(_b)
A_reduced =
.
1.
1. :
2. :
3. :
4. , D1, D2 D3, , , :
5. | |||
D1 | D2 | D3 | |
, 103 , 57 , 176 .
2.
1. :
2. :
3. :
4. ( ), , :
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( ) | ||||
3.
1. :
2. :
3. :
4. , 452 1, 245 2 171 3, , , :
D1 | D2 | D3 | |
1 | |||
2 | |||
3 |
4.
1. :
2. :
3. :
4. :
( ) | ||||
( ), .
5.
[1] c. 205-216
1. ... MATHCAD. . , 2005.
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__ __________2007
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