нatrix A 3D |2 5 2 -4 -1, suppose azn is the pivot. This means that Row ? v is being zeroed out by multiplying Row ? v by 7 t to Row 2. This also means that Row ? v is being zeroed out by multiplying Row ? by 2, and adding it to Row v operations by multiplying on the left of A by the matrix M = I at a11, we determine

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter7: Matrices And Determinants
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4
10
In the matrix A
-
2
5
−1 suppose a22 is the pivot. This means that Row? is being zeroed out by multiplying Row? by
9
-4 7
by
adding it to Row 2. This also means that Row ? ✓ is being zeroed out by multiplying Row ? ✓
these row operations by multiplying on the left of A by the matrix
M
To pivot at a11, we determine
M. A =
-
→
►
▶
—|
and
and adding it to Row 2. We can perform
Transcribed Image Text:4 10 In the matrix A - 2 5 −1 suppose a22 is the pivot. This means that Row? is being zeroed out by multiplying Row? by 9 -4 7 by adding it to Row 2. This also means that Row ? ✓ is being zeroed out by multiplying Row ? ✓ these row operations by multiplying on the left of A by the matrix M To pivot at a11, we determine M. A = - → ► ▶ —| and and adding it to Row 2. We can perform
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