Representing Linear Systems with Matrices
Precalculus · Flashcards · Recall
PRECALCULUS · FLASHCARDS
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QUESTION
Identify the variable vector
x
⃗
\vec{x}
x
for variables
x
x
x
and
y
y
y
in a matrix equation.
QUESTION
Which matrix is formed by appending
b
⃗
\vec{b}
b
as a last column to
A
A
A
for a linear system?
QUESTION
Which number must be used as the coefficient of
y
y
y
in
x
−
2
z
=
7
x-2z=7
x
−
2
z
=
7
when forming matrix
A
A
A
?
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ANSWER
0
0
0
. Missing variables have coefficient 0 in the matrix.
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