Zol Tun Kul
Reputation
1,768
Top tag
Next privilege 2,000 Rep.
 Oct24 asked Does the line $(2,1,1)+t(-3,1,5)$ live within the plane $31x+3y+18z=62$? Oct24 asked Why isn't the orthogonal vector to a direction vector of a plane not necessarily perpendicular to such plane? Oct24 asked The normal equation of the plane that contains the line $(1,1,1) + t(-2,0,3)$ Oct2 asked Deriving $\frac{8}{\sqrt{x-2}}$ Oct1 asked Why $(-1 \cdot h) = -1$ when $h$ approaches $0$? Sep20 asked Proving that $\lim_{x\to3}\frac{x}{4x-9}=1$ Sep20 asked Why is $|(x-2)| < \delta \le 1$ true when proving $\lim_{x\to2}(3x^2-x)=10$? Sep19 asked Why does $|x-1|^2+3|x-1| < \epsilon \implies |x-1|^2 < \frac{\epsilon}{2} \ \ \land \ \ 3|x-1| < \frac{\epsilon}{2}$? Sep19 asked Proving $\lim_{x\to1}(x^2+3)=4$ Sep12 asked Determinant of a matrix with trigonometry functions. Sep7 asked Determining what values in a system can cause infinite/unique/no solutions. Sep7 asked For what values of $p$ and $b$ is the vector $(b,8,b+7)$ a solution of this system? Sep5 asked Determining the values of $b$ in $Ax=b$ to have a consistent system. Sep1 asked Is $A$ invertible if $ABAB^2 = I$? Sep1 asked Why does a matrix column being a multiple of another imply that the matrix is singular? Aug21 asked Factoring $x^3-8$ by grouping Jul7 asked Finding two matrices that permit a change of variable eliminating the crossed term. Jul6 asked Surjective linear transformations: is checking for linear independency enough? Jul6 asked Gram-Schmidt: Do the sets have some sort of order? Jul5 asked Calculating an orthonormal base given another base.