What is the inverse of this matrix?

[
1
1
2

0 −
1
4

]

Multiple choice question.

A)
[
3 0 −2
4 −9 −5
]

B)
[
1 2
0 −4
]

C)
[
2 4
−1 0
3 −1
]

D)
not possible

Question

What is the inverse of this matrix?

[ 
1	
1
2
 
0	−
1
4
 
 ]

Multiple choice question.

A)
[ 
3	0	−2
4	−9	−5
 ]


B)
[ 
1	2
0	−4
 ]


C)
[ 
2	4
−1	0
3	−1
 ]


D)
not possible

GPT-5 mini · Answer

D) not possible.

Reason: the given matrix is not square (it has 2 columns and 3 rows or vice versa as shown), and only square matrices can have a (two-sided) inverse.

What is the inverse of this matrix?

[
1
1
2

0 −
1
4

]

Multiple choice question.

A)
[
3 0 −2
4 −9 −5
]

B)
[
1 2
0 −4
]

C)
[
2 4
−1 0
3 −1
]

D)
not possible

All Answers 1

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What is the inverse of this matrix? [ 1 1 2 0 − 1 4 ] Multiple choice question. A) [ 3 0 −2 4 −9 −5 ] B) [ 1 2 0 −4 ] C) [ 2 4 −1 0 3 −1 ] D) not possible

All Answers 1