- #1
WK95
- 139
- 1
Homework Statement
##\begin{bmatrix}1 & 1 & -1 & -1 \\1 & 2 & 0 & 1 \\-1 & 1 & 3 & 5 \\2 & 3 & -1 & 0\end{bmatrix}##
a) Determine the range of L_A
Homework Equations
None
The Attempt at a Solution
The row-reduced matrix is as follows
##\begin{bmatrix}1 & 0 & -2 & -3 \\0 & 1 & 1 & 2 \\0 & 0 & 0 & 0 \\0 & 0 & 0 & 0\end{bmatrix}##
Then
##2x_{3}+3x_{4}##
##-x_{3}-2x_{4}##
##x_{3}##
##x_{4}##
Is this correct?
Homework Statement
##L \big( \begin{bmatrix}a & b \\c & d \end{bmatrix} \big) = \begin{bmatrix}0 & a \\b & c \end{bmatrix}##
a) Show that L is a linear transformation.
b) Define L^{k} = L \circ L^{k-1} for every integer k >= 2
Homework Equations
To be a linear transformation, these must be true
i) ##f(x_{1})+f(x_{2})=f(x_{1} + x_{2})##
ii) ##cf(x_{1})=f(cx_{1})##
The Attempt at a Solution
a) I'm not sure how to start showing this. For i) do I add the two matrices? For ii) do I just multiply each entry of the first matrix by c?
b) I don't know where to start at all. I'm not even sure what the question is asking.
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