Question

find inverse of matrix a using adjoint matrix
4 2 3
A= [1 3 -6]
5 0 7​

Answer 1

Answer:

Find the inverse of matrix by adjoint method

A=

⎣

⎢

⎢

⎡

1

2

3

2

3

1

3

1

2

⎦

⎥

⎥

⎤

Medium

Solution

verified

Verified by Toppr

A=

⎝

⎜

⎜

⎛

1

2

3

2

3

1

3

1

2

⎠

⎟

⎟

⎞

∣A∣=1(6−1)−2(4−3)+3(2−6)

5−2−12

−9

Minor of A=

⎝

⎜

⎜

⎛

5

1

−4

1

−4

−5

−4

−5

−1

⎠

⎟

⎟

⎞

Cof(A)=

⎝

⎜

⎜

⎛

5

−1

−4

−1

−4

+5

−4

+5

−1

⎠

⎟

⎟

⎞

adj (A)=

⎝

⎜

⎜

⎛

5

−1

−4

−1

−1

5

−4

5

−1

⎠

⎟

⎟

⎞

A

−1

=

∣A∣

adj(A)

=

9

1

⎝

⎜

⎜

⎛

−5

1

4

1

4

−5

4

−5

1

⎠

⎟

⎟

⎞

=

9

1

⎝

⎜

⎜

⎛

−5

−1

4

1

4

−5

4

−5

1

⎠

⎟

⎟

⎞

Answer 2

Step-by-step explanation:

make me brainlist

please give me some thanks