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age 19
visits member for 3 years, 6 months
seen Jul 19 at 10:44

May
28
asked Calculating a basis given some constraints.
May
28
accepted Does linear dependency have anything to do when determining a span?
May
28
comment Does linear dependency have anything to do when determining a span?
Thanks! Yeah I couldn't find the right word. What would you have said?
May
28
comment Does linear dependency have anything to do when determining a span?
Ok so, the dimension of $\mathbb{R}^2$ is 2, therefore its basis must have $2$ vectors. Since a basis contains the minimum number of vectors needed to span $\mathbb{R}^2$, any set of vectors that supposedly span $\mathbb{R}^2$ must have, as a minimum, 2 vectors. Then $\{(1,1),(2,2)\}$ can't be a span because it has only one significant vector, whereas it needs at least 2, right? So a set of 3 vectors can span $\mathbb{R}^2$, as long as two of its vectors are linearly independent, yes?
May
28
asked Does linear dependency have anything to do when determining a span?
May
27
asked Proving that a subset is a subspace by showing a scalar combination.
May
27
accepted When proving if a subset is a subspace, can I prove closure under addition and multiplication in a single proof?
May
27
comment When proving if a subset is a subspace, can I prove closure under addition and multiplication in a single proof?
Reckon this would apply to any problem of this kind, or only certain ones?
May
27
asked When proving if a subset is a subspace, can I prove closure under addition and multiplication in a single proof?
May
27
accepted Proving $||\vec{a}+\vec{b}|| = ||\vec{a}-\vec{b}|| \iff \vec{a} \perp \vec{b}$
May
27
asked Proving $||\vec{a}+\vec{b}|| = ||\vec{a}-\vec{b}|| \iff \vec{a} \perp \vec{b}$
May
27
accepted If $n$ vectors are linearly independent, is their span $\mathbb{R}^n$?
May
26
comment If $n$ vectors are linearly independent, is their span $\mathbb{R}^n$?
@Muphrid: My concept of Span is pretty basic. To me, it's just the set of all vectors resulting from all linear combinations of the $n$ vectors.
May
26
asked If $n$ vectors are linearly independent, is their span $\mathbb{R}^n$?
May
26
asked Why is this simplex procedure not working? $\min z = y - x + 1$
May
26
accepted Proving that three points don't belong to the same line.
May
26
accepted About finding points in a plane given its normal equation.
May
26
comment About finding points in a plane given its normal equation.
@ManuelFdzLpz: You forgot the question mark after that statement!
May
26
asked About finding points in a plane given its normal equation.
May
25
comment From plane parametric to normal equations and viceversa.
I'm kind of unfamiliar with that Null[] = Span{} thing you did there, what is it?