
Математика (экономика) 2
Quiz
•
Mathematics
•
University
•
Practice Problem
•
Medium
Jalgasbek Jalgasbek
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
det K=0
det K=9
det K=3
det K= -21
det K= 21
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
det K=0
det K=9
det K=3
det K= -21
det K= 21
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Матрица А-1 называется обратной для матрицы А (квадратная порядка n), если выполняется условие
АА-1= А-1А= Е
А+А-1=Е
А-А-1=Е
АА-1=АТ
АТА-1=АТ=E
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Совокупность mxn действительных чисел, расположенных в виде прямоугольной таблицы, где m – число строк, n – число столбцов таблицы называется
Прямоугольной матрицей
Единичной матрицей
Треугольной матрицей
Квадратной матрицей
Нулевой матрицей
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Если в матрице число строк равно числу ее столбцов, то такая матрица называется
Квадратной
Прямоугольной
Треугольной
Единичной
Диагональной
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
АВ=0
Нет правильного ответа
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-2
0
10
1
20
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