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seen Jul 27 at 21:29

Jul
26
accepted Why do these vectors not span the given space?
Jul
26
comment Why do these vectors not span the given space?
I'm still a little confused as to why $H$ is not a span of the three vectors if $v_1$ and $v_3$ are not in $H$. Is this because the second and third entries in $v_1$ and $v_3$ are not equal? Or is it that when an element is not in $H$, then it can't span $H$?
Jul
26
comment Why do these vectors not span the given space?
@MichaelAlbanese $H$ is the set of vectors whose 2nd and 3rd entries are equal.
Jul
26
asked Why do these vectors not span the given space?
Jul
20
accepted Find the triangular matrix and determinant.
Jul
20
comment Find the triangular matrix and determinant.
Ahh I see, you multiplied row 3 and 4 by constants as a separate step then added them together.
Jul
20
comment Find the triangular matrix and determinant.
A part of the theorem in my book says that If a row of A is multiplied by k to produce a matrix B, then det B is k det A. I think that is what you used but I cannot seem to understand it. Could you explain that to me?
Jul
20
asked Find the triangular matrix and determinant.
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jul
2
accepted Determining whether or not a vector is a linear combination of a give matrix
Jun
30
comment Determining whether or not a vector is a linear combination of a give matrix
Oh I see, the third column is the free variable and that gives infinitely many solutions. The 2 and 3 is when the free variable is 0.
Jun
30
comment Determining whether or not a vector is a linear combination of a give matrix
@mfl How did you get 2 and 3? There is a 5 and 4 in the third column of the matrix.
Jun
30
comment Determining whether or not a vector is a linear combination of a give matrix
@GitGud I formed matrix A using 3 individual vectors in column 1, 2 and 3. I thought that was the answer but the answer in the back of the book says that there is no such linear combination.
Jun
30
comment Determining whether or not a vector is a linear combination of a give matrix
I am not sure what you mean by columns or rows, I just began this section. From what I understand I am supposed to find the scalars that would make the linear combination possible.
Jun
30
asked Determining whether or not a vector is a linear combination of a give matrix
Jun
15
awarded  Notable Question
May
6
comment Finding the total number of 8 bit strings.
Thank you for the simple explanation!
May
6
accepted Finding the total number of 8 bit strings.
May
6
asked Finding the total number of 8 bit strings.