Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
18. If A is an invertible matrix of order 2 , then
det
(
A
−
1
)
\operatorname{det}\left(\mathrm{A}^{-1}\right)
det
(
A
−
1
)
is equal to (A)
det
(
A
)
\operatorname{det}(\mathrm{A})
det
(
A
)
(B)
1
det
(
A
)
\frac{1}{\operatorname{det}(\mathrm{~A})}
det
(
A
)
1
(C) 1 (D) 0 (A)
det
(
A
)
\operatorname{det}(\mathrm{A})
det
(
A
)
(B)
1
det
(
A
)
\frac{1}{\operatorname{det}(\mathrm{~A})}
det
(
A
)
1
(C) 1 (D) 0
Browse the problem library