1,681 reputation
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age 19
visits member for 3 years, 10 months
seen Nov 16 at 7:36

Oct
24
asked Does the line $(2,1,1)+t(-3,1,5)$ live within the plane $31x+3y+18z=62$?
Oct
24
asked Why isn't the orthogonal vector to a direction vector of a plane not necessarily perpendicular to such plane?
Oct
24
asked The normal equation of the plane that contains the line $(1,1,1) + t(-2,0,3)$
Oct
2
asked Deriving $\frac{8}{\sqrt{x-2}}$
Oct
1
asked Why $(-1 \cdot h) = -1$ when $h$ approaches $0$?
Sep
20
asked Proving that $\lim_{x\to3}\frac{x}{4x-9}=1$
Sep
20
asked Why is $|(x-2)| < \delta \le 1$ true when proving $\lim_{x\to2}(3x^2-x)=10$?
Sep
19
asked Why does $|x-1|^2+3|x-1| < \epsilon \implies |x-1|^2 < \frac{\epsilon}{2} \ \ \land \ \ 3|x-1| < \frac{\epsilon}{2}$?
Sep
19
asked Proving $\lim_{x\to1}(x^2+3)=4$
Sep
12
asked Determinant of a matrix with trigonometry functions.
Sep
7
asked Determining what values in a system can cause infinite/unique/no solutions.
Sep
7
asked For what values of $p$ and $b$ is the vector $(b,8,b+7)$ a solution of this system?
Sep
5
asked Determining the values of $b$ in $Ax=b$ to have a consistent system.
Sep
1
asked Is $A$ invertible if $ABAB^2 = I$?
Sep
1
asked Why does a matrix column being a multiple of another imply that the matrix is singular?
Aug
21
asked Factoring $x^3-8$ by grouping
Jul
7
asked Finding two matrices that permit a change of variable eliminating the crossed term.
Jul
6
asked Surjective linear transformations: is checking for linear independency enough?
Jul
6
asked Gram-Schmidt: Do the sets have some sort of order?
Jul
5
asked Calculating an orthonormal base given another base.