- #1
_N3WTON_
- 351
- 3
Homework Statement
If T is linear, show that it is linear by finding a standard matrix A for T so that:
Also show that this equation holds for the matrix you have found. If T is not linear, prove that T is not linear by showing that it does not fit the definition of a linear transformation
Homework Equations
Definition of a linear transformation:
[itex] T(\vec{u}+\vec{v}) = T(\vec{u})+T(\vec{v}) [/itex]
[itex] T(c\vec{u}) = cT(\vec{u}) [/itex]
The Attempt at a Solution
First I let $$ \vec{e}_{1} =
\begin{bmatrix}
1\\
0
\\0
\end{bmatrix} $$
$$ \vec{e}_{2} =
\begin{bmatrix}
0\\
1
\\0
\end{bmatrix}$$
$$ \vec{e}_{3} =
\begin{bmatrix}
0\\
0
\\1
\end{bmatrix}$$
However, when I go to separate
$$
\vec{b} = \begin{bmatrix}
2x_1 - 3x_2\\
2x_2\\
4x_1 + 3
\end{bmatrix}$$ I am not sure how to handle the constant, i.e, I am not sure how to rewrite as [itex] A\vec{x} [/itex]. I think once I figure that out I should be able to do the rest of problem