Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
If , then is equal…
MATHEMATICS · Single correct · CBSE · Mathematics · Matrices · Matrices
Problem
If
A
=
(
cos
x
sin
x
−
sin
x
cos
x
)
=
f
(
x
)
A=\begin{pmatrix}\cos x & \sin x\\-\sin x & \cos x\end{pmatrix}=f(x)
A
=
(
cos
x
−
sin
x
sin
x
cos
x
)
=
f
(
x
)
, then
A
−
1
A^{-1}
A
−
1
is equal to (1)
f
(
−
x
)
f(-x)
f
(
−
x
)
(2)
f
(
x
)
f(x)
f
(
x
)
(3)
−
f
(
x
)
-f(x)
−
f
(
x
)
(4)
−
f
(
−
x
)
-f(-x)
−
f
(
−
x
)
Related theory
Matrix Operations
Matrices
Determinants
Adjoint and inverse
Invertible matrices
Browse the problem library