Smart Solution

Inverse Matrix 3 x 3

(in a smart way)

​

​

Musical

English Subtitle

​

Inverse Matrix 3 x 3

​

“

Leonardo Sembiring

leonardo.sembiring@gmail.com

Using rule of Sarrus

for determinant of A

A =

Adjoint matrix using addition-deduction

3.1.1

2.0.(-2)

(-1).1.(-2)

(-2).1.(-1)

(-2).0.3

1.1.2

Rule of Sarrus

Determinant of A

A =

|A| =

+

+

+

|A|

=

3

+

0

+

2

2

0

2

=

1

Matrix adjoint of A

A =

Adj (A)

1,1

2,1

1,2

2,2

1

0

-1

1

Adj A=

1,3

2,3

1

-1

3,1

3,2

0

2

3,3

1

Adj (A) =

A^-1 =

Thanks for watching

Keep watching for our next video

Do not forget to subscribe our channel

Coming soon...smart solution

The roots of the equation :

x² - x + 1 = 0 are x₁ and x₂

Find the value : x₁⁷ + x₂⁷

CREDITS

• Presentation template by SlidesCarnival
• Photographs by Unsplash
• Music by NoCopyrightSounds
• Smart solution by Flesmyn Mathematics