We know that a set of vectors in a vector space is called a basis for if the following conditions are true.
2) is linearly independent
I can't find the answer of my above mentioned question. All I can think of is this.
So in the above post are the row vectors of matrix and so spans the row space of which is :
Shouldn't because is the basis of row space of and for the fact that ?
So how and why
Can anyone kindly help me understand please?