Вопрос № 163
Calculate determine
the 3rd order:
16.
8.
1.
48.
17.
Вопрос № 164
Solve the system of
equations:
(5;-1).
(0;1).
(-1;5).
(1;1).
(8;3).
Вопрос № 165
Solve the system of
equations:
(1;1;1).
(1;1;-1).
(1;0;1).
(-1;1;-1).
(1;2;1).
Вопрос № 166
Solve the system of
equations:
(-3;2;-1).
(-3;2;0).
(-3;6;-1).
(-3;4;-1).
(3;2;1).
Вопрос № 167
Solve the system of
equations:
(-1;-2;4).
(-1;0;3).
(-1;-9;4).
(-1;-5;4).
(0;-2;4).
Вопрос № 168
Solve the system of
equations:
(1;2;3).
(-1;2;3).
(1;2;-3).
(1;5;3).
(1;2;0).
Вопрос № 169
If the matrix
,then the matrix 3A is:
Вопрос № 170
If the matrix
, then the matrix 5A is:
Вопрос № 171
Matrix product
*
is:
Вопрос № 172
Calculate the
determinant
:
2.
-1.
1.
5 .
6.
Вопрос № 173
Calculate the
determinant
:
6.
-6.
5.
2.
3.
Вопрос № 174
Calculate the
determinant
:
2.
-2.
3.
1.
-1.
Вопрос № 175
Calculate the
determinant
:
6.
-2.
3.
1.
-1.
Вопрос № 176
In which case the determinant does not change
if interchange rows and columns with the same number
if you rearrange the columns
if you multiply the determinant to zero
if you rearrange the rows and columns with different numbers
if you multiply the determinant by one
Вопрос № 177
An additional determinant of
:
is obtained by substituting the second column of free terms.
obtained by substituting the first column of free terms.
obtained by substituting the third column of free terms.
obtained by multiplying the determinant to zero.
obtained by multiplying the determinant of one.
Вопрос № 178
What is the number
of rows of the matrix?
m=1.
n=0.
m=0.
m=n.
n=1.
Вопрос № 179
If the determinant
of the system is different from zero, then the solution of the
system:
is unique.
x=0 y=0.
no solutions
y=0.5
non solution
Вопрос № 180
Elements the main
diagonal:
А11А22А33
А33А23 А11
А32А23 А21
А21А32А33
А32А23 А11 .
Вопрос № 181
An additional
determinant of the system
Вопрос № 182
Solution of the
system
are:
x1=1, x2=-2.
x1=-1, x2=2.
x1=-2, x2=1.
x1=-1, x2=0.
x1=1, x2=0.
Вопрос № 183
Solution of the
system
are:
x1=3, x2=-1.
x1=-1, x2=3.
x1=1, x2=3.
x1=-3, x2=1.
x1=-1, x2=2.
Вопрос № 184
Solution of the
system
are:
x1=2, x2=-3.
x1=-2, x2=3.
x1=-3, x2=2.
x1=-3, x2=1.
x1=3, x2=0.
Вопрос № 185
Solution of the
system
are:
x1=3, x2=-5.
x1=-5, x2=2.
x1=-5, x2=-3.
x1=5, x2=-3.
x1=-3, x2=5.
Вопрос № 186
Solution of the
system
are:
No solution.
(-8;4;3).
(8;-4;3).
(-2;1;0).
(-2;-1;0).
Вопрос № 187
Solution of the
system
are:
(-1;1;0).
No solution.
(-8;4;3)
(8;-4;3).
(-2;-1;0).
Вопрос № 188
Solution of the
system
are:
(2;2;2).
(-2;2;1).
No solution.
(-2;1;0).
(-2;2;0).
Вопрос № 189
Solution of the
system
are:
(4;3;2;0).
No solution.
(-2;3;2;3).
(0;2;1;3).
(-2;2;0;1).
Вопрос № 190
A square matrix A n-th order is called degenerate if:
detA=0.
detA
0.
detA=1.
detA=-1.
detA=A*/A-1.
Вопрос № 191
The sum of matrices
A + B, if
,
equal to:
Вопрос № 192
Disposition of straight Ах+Ву+С=0,
if В=0, С
0:
parallel to axis ОХ;
axis ОХ;
parallel to axis ОУ;
axis ОУ;
passes through the origin coordinates.
Вопрос № 193
Angular coefficient of the straight 2,5у-5х+5=0:
2;
2,5;
-2;
-2,5;
5;