- #1
julie94
- 18
- 0
Hi everyone,
I am working on the following problem.
Suppose the set of vectors X1,..,Xk is a basis for linear space V1.
Suppose the set of vectors Y1,..,Yk is also a basis for linear space
V1.
Clearly the linear space spanned by the Xs equals the linear space
spanned by the Ys.
Construct an algebraic argument to show that
X(X'X)^(-1)X'=Y(Y'Y)^(-1)Y'
I am very confused, I am not sure what is meant by algebraic argument
in this instance, and I would welcome your ideas on how to tackle this
question.
Thanks in advance.
I am working on the following problem.
Suppose the set of vectors X1,..,Xk is a basis for linear space V1.
Suppose the set of vectors Y1,..,Yk is also a basis for linear space
V1.
Clearly the linear space spanned by the Xs equals the linear space
spanned by the Ys.
Construct an algebraic argument to show that
X(X'X)^(-1)X'=Y(Y'Y)^(-1)Y'
I am very confused, I am not sure what is meant by algebraic argument
in this instance, and I would welcome your ideas on how to tackle this
question.
Thanks in advance.