s this correct? Is it because of the zero row when reducing to row reduced echelon form? Because I thought it was based off the non zero rows. Where am I getting confused? (At this point, I haven't learned about rank and nullity yet.)

s this correct? Is it because of the zero row when reducing to row reduced echelon form? Because I thought it was based off the non zero rows. Where am I getting confused? (At this point, I haven't learned about rank and nullity yet.)

Elementary Linear Algebra (MindTap Course List)

8th Edition

ISBN:9781305658004

Author:Ron Larson

Publisher:Ron Larson

Chapter5: Inner Product Spaces

Section5.CR: Review Exercises

Problem 54CR: Let V be an two dimensional subspace of R4 spanned by (0,1,0,1) and (0,2,0,0). Write the vector...

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Question

Why is this correct? Is it because of the zero row when reducing to row reduced echelon form?

Because I thought it was based off the non zero rows. Where am I getting confused? (At this point, I haven't learned about rank and nullity yet.)

Let T₁: R³ → R³ be multiplication by A and find the dimension of the subspace of R³ consisting of all vectors x for which T₁(x) = 0.
-
a) A
Your answer is correct.
= 106
106
OOOO
The dimension is
0
P
2

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