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JEE 2020 Mathematics : Adjoint and Inverse of a Matrix & System of Equations (26.08.2019)
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Question 1
The inverse of 
is:
is: Question 2
The inverse of the matrix 
is:
is: Question 3
If A 
, then
, then Question 4
If A is a square matrix of order 
and k is a scalar, then 
is equal to:
and k is a scalar, then is equal to: Question 5
Let 
, then
, thenQuestion 6
A=
Then find A+adj(A)
Then find A+adj(A) Question 7
Find adj(A)-A Question 8
If the system of linear equations, kx + 2y + 3z = 1, x + ky + 3z = 2, -x + 2y + kz = 3 has unique solution, then the real value of k is not equal to
Question 9
Find which of the following statements are true
3x-2y+3z=8
2x+y-z=1
4x-3y+2z=4
3x-2y+3z=8
2x+y-z=1
4x-3y+2z=4
Question 10
Find which of the following statements are true
2x-y=5
x+y=4
2x-y=5
x+y=4
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Apr 7JEE & BITSAT
