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I was wondering if you could help me check over an answer and working out for a question.

The question is:

Find a basis for the row space of the matrix

1 −2 0 1

2 1 5 −3

0 1 3 5

3 −1 5 −2

Then find the rank and the nullity of the matrix.

My answer is:

The basis of the row space is {(1,-2,0,1),(0,1,3,5),(0,0,-10,30)}.

The rank is 3 and the nullity is 1.

My working out is here:http://postimage.org/image/ju0mxxp95/ [Broken]

Could you have a look at it and shed light on where I may have gone wrong/my method if the answer/working out is wrong?

Thankyou!

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# Homework Help: Find the Basis of the Rowspace, Rank & Nullity of Matrix : Answer Check

Can you offer guidance or do you also need help?

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