Linear Algebra Examples

4 x = - 3 y + 3

$4 x = - 3 y + 3$ ,

7 x = - 3 y + 3

$7 x = - 3 y + 3$

Step 1

Find the

A X = B

$A X = B$ from the system of equations.

Step 2

The matrix must be a square matrix to find the inverse.

Inverse matrix cannot be found

Step 3

Left multiply both sides of the matrix equation by the inverse matrix.

Step 4

Any matrix multiplied by its inverse is equal to

1

$1$ all the time.

A \cdot A^{- 1} = 1

$A \cdot A^{- 1} = 1$ .

[\begin{array}{c} x \\ y \end{array}] = I n v e r s e

$[\begin{array}{c} x \\ y \end{array}] = I n v e r s e$ matrix cannot be

f o u n d \cdot [\begin{array}{c} 3 \\ 3 \end{array}]

$f o u n d \cdot [\begin{array}{c} 3 \\ 3 \end{array}]$

Step 5

Simplify the right side of the equation.

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Multiply

I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d)

$I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d)$ by each element of the matrix.

Simplify each element in the matrix.

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Rearrange

I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d) \cdot 3

$I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d) \cdot 3$ .

Rearrange

I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d) \cdot 3

$I n v e r s e (m a t r i x) (c a n \cdot n o t) (b e) (f o u n d) \cdot 3$ .

[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]

$[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]$

[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]

$[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]$

[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]

$[\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]$

Step 6

Simplify the left and right side.

[\begin{array}{c} x \\ y \end{array}] = [\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]

$[\begin{array}{c} x \\ y \end{array}] = [\begin{array}{c} 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \\ 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d \end{array}]$

Step 7

Find the solution.

x = 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d

$x = 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d$

y = 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d

$y = 3 I n^{4} v e^{3} r^{2} s m a^{2} t^{2} i x c o^{2} b f u d$