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age 19
visits member for 3 years, 8 months
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1d
accepted Proving that $\lim_{x\to3}\frac{x}{4x-9}=1$
1d
accepted Proving $\lim_{x\to1}(x^2+3)=4$
Sep
7
accepted For what values of $p$ and $b$ is the vector $(b,8,b+7)$ a solution of this system?
Sep
5
accepted Determining the values of $b$ in $Ax=b$ to have a consistent system.
Sep
1
accepted Is $A$ invertible if $ABAB^2 = I$?
Aug
21
accepted Factoring $x^3-8$ by grouping
Jul
7
accepted Finding two matrices that permit a change of variable eliminating the crossed term.
Jul
6
accepted Surjective linear transformations: is checking for linear independency enough?
Jul
6
accepted Gram-Schmidt: Do the sets have some sort of order?
Jul
5
accepted Calculating an orthonormal base given another base.
Jul
3
accepted Is this procedure for $5^{300} \bmod 11$ correct?
Jun
22
accepted How can a subspace have a lower dimension than its parent space?
Jun
21
accepted Orthogonal complement of a line in $\mathbb{R}^2$ spanned by $(1,2)$
Jun
19
accepted About vector orthogonality with itself and implication in a subspace's complement.
Jun
18
accepted If a vector fulfils one condition in this theorem, does it automatically fulfil both?
Jun
17
accepted Understanding the orthogonal complement of a subspace.
Jun
16
accepted Determining that this basis is linearly independent with a variable
Jun
14
accepted What does the $t$ in $(x,y,z)^t$ mean?
Jun
2
accepted Creating groups with 10 men and 10 women.
Jun
2
accepted Creating teams with exactly two men and one woman, where the order matters.