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seen Dec 1 at 20:39

May
22
accepted Is comparing the differences between each vector in a triangle enough to determine if it is isosceles?
May
22
accepted Finding $\vec{DE}$ in a triangle $ABC$.
May
21
accepted Proving that this quadrilateral is a parallelogram.
May
20
accepted Why $\vec{AB} - s\vec{AB} = (1-s)\vec{AB}$?
May
11
accepted What to do if the righthand of a constraint is a variable when solving Linear programs?
May
11
accepted About canonical linear programs.
May
5
accepted Combinations for 15 equivalent objects among 3 places.
Apr
10
accepted About the particular solution given an homogeneous solution in a recurrence relation.
Apr
9
accepted How to calculate the determinant when the diagonal is in terms of $k$?
Apr
9
accepted How to determine column dependency without calculating the determinant?
Apr
9
accepted Going from $X^tAB - I = X^t$ to $X^t(AB-I) = I$ in matrix algebra.
Apr
9
accepted Calculating matrix determinants based on another's.
Apr
8
accepted What cases should I check when I am looking for the possible infinite solutions of a matrix?
Apr
7
accepted Determining the necessary values for a matrix' coefficients to achieve a certain rank.
Apr
7
accepted Why is a matrix $A$ that fulfils $AA^t = I$ invertible?
Apr
7
accepted How does Laplace expansion work?
Apr
7
accepted Find the values of $k$ that make this system inconsistent, with unique solution, and with infinite solutions.
Apr
6
accepted Calculating the determinant of $-2A^{-1}$ given the determinant of $A$.
Apr
6
accepted If a matrix is not invertible, is it still possible to find a left and/or right inverse?
Apr
6
accepted How to solve this homogeneous system, with a missing column?