Linear Algebra Examples

$x e^{2 t} [\begin{array}{c} 1 \\ 0 \end{array}] + y e^{2 t} [\begin{array}{c} 0 \\ - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1

Simplify.

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Step 1.1

Simplify each term.

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Step 1.1.1

Multiply $x e^{2 t}$ by each element of the matrix.

$[\begin{array}{c} x e^{2 t} \cdot 1 \\ x e^{2 t} \cdot 0 \end{array}] + y e^{2 t} [\begin{array}{c} 0 \\ - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.2

Simplify each element in the matrix.

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Step 1.1.2.1

Multiply $x$ by $1$ .

$[\begin{array}{c} x e^{2 t} \\ x e^{2 t} \cdot 0 \end{array}] + y e^{2 t} [\begin{array}{c} 0 \\ - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.2.2

Multiply $x e^{2 t} \cdot 0$ .

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Step 1.1.2.2.1

Multiply $0$ by $x$ .

$[\begin{array}{c} x e^{2 t} \\ 0 e^{2 t} \end{array}] + y e^{2 t} [\begin{array}{c} 0 \\ - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.2.2.2

Multiply $0$ by $e^{2 t}$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + y e^{2 t} [\begin{array}{c} 0 \\ - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.3

Multiply $y e^{2 t}$ by each element of the matrix.

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} y e^{2 t} \cdot 0 \\ y e^{2 t} \cdot - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.4

Simplify each element in the matrix.

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Step 1.1.4.1

Multiply $y e^{2 t} \cdot 0$ .

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Step 1.1.4.1.1

Multiply $0$ by $y$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 e^{2 t} \\ y e^{2 t} \cdot - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.4.1.2

Multiply $0$ by $e^{2 t}$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ y e^{2 t} \cdot - 1 \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.4.2

Move $- 1$ to the left of $y e^{2 t}$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ - 1 \cdot (y e^{2 t}) \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.4.3

Rewrite $- 1 (y e^{2 t})$ as $- (y e^{2 t})$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ - y e^{2 t} \end{array}] + t [\begin{array}{c} 1 \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.5

Multiply $t$ by each element of the matrix.

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ - y e^{2 t} \end{array}] + [\begin{array}{c} t \cdot 1 \\ t \cdot 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.6

Simplify each element in the matrix.

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Step 1.1.6.1

Multiply $t$ by $1$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ - y e^{2 t} \end{array}] + [\begin{array}{c} t \\ t \cdot 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.1.6.2

Multiply $t$ by $0$ .

$[\begin{array}{c} x e^{2 t} \\ 0 \end{array}] + [\begin{array}{c} 0 \\ - y e^{2 t} \end{array}] + [\begin{array}{c} t \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.2

Add the corresponding elements.

$[\begin{array}{c} x e^{2 t} + 0 \\ 0 - y e^{2 t} \end{array}] + [\begin{array}{c} t \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.3

Simplify each element.

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Step 1.3.1

Add $x e^{2 t}$ and $0$ .

$[\begin{array}{c} x e^{2 t} \\ 0 - y e^{2 t} \end{array}] + [\begin{array}{c} t \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.3.2

Subtract $y e^{2 t}$ from $0$ .

$[\begin{array}{c} x e^{2 t} \\ - y e^{2 t} \end{array}] + [\begin{array}{c} t \\ 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.4

Add the corresponding elements.

$[\begin{array}{c} x e^{2 t} + t \\ - y e^{2 t} + 0 \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 1.5

Add $- y e^{2 t}$ and $0$ .

$[\begin{array}{c} x e^{2 t} + t \\ - y e^{2 t} \end{array}] = [\begin{array}{c} 0 \\ 1 \end{array}]$

Step 2

The matrix equation can be written as a set of equations.

$x e^{2 t} + t = 0$

$- y e^{2 t} = 1$