A=[2,6;4,3]
A =
2 6
4 3
b=[7;1]
b =
7
1
x=A\b
x =
-0.8333
1.4444
inv(A)*b
ans =
-0.8333
1.4444
format compact
3==3
ans =
logical
1
3==4
ans =
logical
0
3<4
ans =
logical
1
3<=4
ans =
logical
1
3>4
ans =
logical
0
3>=4
ans =
logical
0
3~=4
ans =
logical
1
3~=3
ans =
logical
0
M=[1,5,6;-1,4,7]
M =
1 5 6
-1 4 7
N=[7:9;-1,0,7]
N =
7 8 9
-1 0 7
Mlogical array
1 1 1
0 0 0
M==N
ans =
2×3 logical array
0 0 0
1 0 1
M~=N
ans =
2×3 logical array
1 1 1
0 1 0
~1
ans =
logical
0
~0
ans =
logical
1
~5
ans =
logical
0
3<4
ans =
logical
1
~(3<4)
ans =
logical
0
k=5;
l=8;
k~=l
ans =
logical
1
A
A =
2 6
4 3
b
b =
7
1
soustava(A,b)
reseni
-0.8333
1.4444
D=[1,1;2,2]
D =
1 1
2 2
e=[6;1]
e =
6
1
soustava(D,e)
nema jednoznacne reseni
det(D)
ans =
0
K=[10,8,7,9;3,2,1,0;4,5,0,-1;8,6,4,2]
K =
10 8 7 9
3 2 1 0
4 5 0 -1
8 6 4 2
b=[-2,3,1,6]
b =
-2 3 1 6
soustava(K,b.')
reseni
1.0000
-1.0000
2.0000
-2.0000
det(K)
ans =
-44.0000
el_obvod
Matice koef. soust
-1 1 1 0 0
0 0 -1 1 1
2 3 0 0 0
0 -3 10 2 0
0 0 0 -2 1
Vektor pravych stran
0
0
12
0
-4
el_obvod
Matice koef. soust
-1 1 1 0 0
0 0 -1 1 1
2 3 0 0 0
0 -3 10 2 0
0 0 0 -2 1
Vektor pravych stran
0
0
12
0
-4
Determinant
-178
el_obvod
Matice koef. soust
-1 1 1 0 0
0 0 -1 1 1
2 3 0 0 0
0 -3 10 2 0
0 0 0 -2 1
Vektor pravych stran
0
0
12
0
-4
Determinant
-178
Proudy
2.6292
2.2472
0.3820
1.4607
-1.0787
reseniSoustavy
reseni
1.0000 + 1.0000i
-1.0000 - 2.0000i
2.0000 - 3.0000i
-2.0000 + 4.0000i
reseniSoustavy
reseni
0.6087 + 0.3913i
-0.0870 - 0.5797i
1.3478 - 4.0145i
-1.8696 + 4.2029i
graf
diary off