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Recent questions tagged inverse of a matrix
+3
votes
1
answer
Find the inverse of each of the following matrices. (i) \(\begin{bmatrix} 0 & 1 & -1\\[0.3em] 4&-3 &4 \\ 3 & -3 & 4\end{bmatrix}\) (ii)
asked
Mar 31, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
+3
votes
1
answer
Given A = [(2,-3)(-4,7)], compute A^–1 and show that 2A^–1 = 9I – A.
asked
Mar 31, 2019
in
Class 12
by
kratos
cbse
adjoint
inverse of a matrix
matrices
class-10
icse
class-12
complex numbers
+2
votes
1
answer
If A = [(1,2,2),(2,1,2),(2,2,1)] then verify A^2 - 4A - 5I = 0.
asked
Mar 31, 2019
in
Class 12
by
kratos
determinant
adjoint
inverse of a matrix
class-11
matrices
determinants
class-12
+3
votes
1
answer
u200b If A = \(\begin{bmatrix}1&2\\[0.3em]4&2\end{bmatrix}\),then show that |2A| = 4 |A| u200b
asked
Mar 30, 2019
in
Class 12
by
kratos
adjoint
matrices
class-12
inverse of a matrix
+2
votes
1
answer
Show that 2tan^-1{tan α/2.tan(π/4 - β/2)} = tan^-1((sinα.cosβ)/(cosα+sinβ))
asked
Mar 22, 2019
in
JEE
by
kratos
applications of derivatives
nda
cbse
adjoint
class-11
jee
inverse of a matrix
jee mains
inverse trigonometric functions
class-12
+2
votes
1
answer
If A = \(\begin{bmatrix} -1 & -2& -2 \\[0.3em] 2&1 &-2 \\[0.3em] 2 &-2 & 1 \end{bmatrix}\), show that adj A = 3A^T
asked
Mar 14, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
+1
vote
1
answer
If sinα + sinβ = 0 = cosα + cosβ , where 0 < β < α < 2π , then which one of the following is correct?
asked
Mar 13, 2019
in
Class 12
by
kratos
nda
adjoint
class-11
inverse of a matrix
determinants
class-12
trigonometric functions
+2
votes
1
answer
If A = \(\begin{bmatrix} 2& 3 \\[0.3em] 1&2 \end{bmatrix}\) verify that A^2 - 4A + I = 0, where I =
asked
Mar 13, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
+3
votes
1
answer
\(A = \begin{bmatrix} 3&1\\[0.3em] -1&2\end{bmatrix}\) show that A^2 – 5A + 7I = 0
asked
Mar 3, 2019
in
Class 12
by
kratos
adjoint
inverse of a matrix
matrices
determinants
class-12
+2
votes
1
answer
If a, b, c are 3 real numbers satisfying the matrix equation,[a b c] [(3 4 1), (3 2 3),
asked
Mar 1, 2019
in
JEE
by
kratos
adjoint
class-11
jee
inverse of a matrix
kvpy
matrices
determinants
jee mains
rmo
class-12
sequences and series
+1
vote
1
answer
Find the inverse of the following matrices. \(\begin{bmatrix} 1 & 0& 0 \\[0.3em] 0&cos α&sin α\\[0.3em] 0 &sin α&-cos α\end{bmatrix}\)
asked
Feb 28, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
+2
votes
1
answer
Inverse of a matrix
asked
Feb 27, 2019
in
Class 12
by
kratos
adjoint
inverse of a matrix
matrices
class-12
applications of matrices and determinants
+1
vote
1
answer
Find the inverse of the matrices by using elementary row transformations \(\begin{bmatrix} 5 & 2\\[0.3em] 2 & 1\end{bmatrix}\)
asked
Feb 23, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
+3
votes
1
answer
If A = [(1,2),(2,1)] then adj A = (a) [(1,-2),(-2,1)] (b) [(2,1),(1,1)] (c) [(1,-2),(-2,-1)] (d) [(-1,2),(2,-1)]
asked
Feb 21, 2019
in
Class 12
by
kratos
adjoint
determinants
class-12
inverse of a matrix
+1
vote
1
answer
Find the adjoint of the matrix A = |(-1,-2,-2)(2,1,-2)(2,-2,1)| and hence show that A(adj A) = |A|I3
asked
Feb 19, 2019
in
JEE
by
kratos
determinant
adjoint
cbse
inverse of a matrix
jee
matrices
jee mains
class-12
+3
votes
1
answer
A = [(2,-1,1)(-1,2,-1)(1,-1,2)], then verify that A^3- 6A^2+9A-4I = 0 and hence find.A^-1.
asked
Feb 18, 2019
in
Class 12
by
kratos
class-12-hindi
determinant
adjoint
inverse of a matrix
determinants
determinants hindi
class-12
applications of matrices and determinants
+3
votes
1
answer
Evaluate : [(cosα cosβ , cosα sinβ , -sinα ),(-sin β , cosβ , 0),(sinα cosβ , sinα sinβ , cosα )]
asked
Feb 17, 2019
in
JEE
by
kratos
adjoint
inverse of a matrix
jee
determinants
jee mains
class-12
+2
votes
1
answer
If A = \(\begin{bmatrix} 2 & 3 \\[0.3em]4 &5 \\[0.3em] \end{bmatrix}\), prove that A - A^T is a skew-symmetric matrix.
asked
Feb 11, 2019
in
Class 12
by
kratos
adjoint
matrices
class-12
inverse of a matrix
+1
vote
1
answer
If sinβ is the harmonic mean of sinα and cosα , and sinθ is the arithmetic mean of sinα and cosα ,
asked
Feb 9, 2019
in
JEE
by
kratos
nda
adjoint
class-11
jee
inverse of a matrix
jee mains
class-12
+2
votes
1
answer
Find the inverse of the matrices and verify that A^-1A = I3. \(\begin{bmatrix} 1 & 3 & 3\\[0.3em] 1&4 & 3 \\ 1 & 3& 4\end{bmatrix}\)
asked
Feb 1, 2019
in
Class 12
by
kratos
adjoint
class-12
inverse of a matrix
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