Rank of Matrix

Which row command is an appropriate next step?

• 7R2 + R3 -> R3

• -7R1 + R3 -> R3

• 7R3 -> R3

• -7R2 + R3 -> R3

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

What is the value of z?

• 6

• -6

• -36

• 4

Tags

CCSS.HSA.REI.B.3

CCSS.HSA.REI.C.8

CCSS.HSA.REI.C.9

What is an appropriate first row command to solve this by Gaussian Elimination?

• 2R2 + R2 -> R2

• -2R1 + R2 -> R2

• R3 +R2 --> R3

• 2R1 + R2 --> R2

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

This is an example of

• Row Echelon Form

• Reduced Row Echelon Form

• Really Reduced Echelon Form

• Really Really Easy Form

Tags

CCSS.HSA.REI.C.6

CCSS.HSA.REI.C.8

• R2 = R1 + R2

• R2 = -R1 + R2

• R2 = R1 +6R2

• R2 = 2R1 + R2

What step should be next?

• Mult. R3 by 0
• Add R2 to R3
•  Mult. R2 by 7 and add to R3
•  Mult. R2 by -7 and add to R3

Tags

CCSS.8.EE.C.8B

The rank of null matrix is

• 0

• 1

• 2

• None of these

• 4

• 3

• 2

• 1

• 0

• 2

• 1

• 3

The rank of identity matrix of order 4 x 4 is

• 3

• 4

• 1

• None