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# 200 Posts

 Jun1 asked Choosing two colours of different tones. Jun1 asked Counting when there are two inclusive conditions. Jun1 asked Checking when a player has all four aces from a deck distribution. Jun1 asked Creating two groups where two people can't be in the same group. Jun1 asked Number of ways to form a 6-digit sequence with these constraints. May29 asked Isolating $x$ from $y = (x-1)^2$ May28 asked If two planes in $\mathbb{R}^3$ pass by the origin, do they necessarily intersect at multiple points? May28 asked Calculating a basis in $\mathbb{R}^4$. May28 asked Calculating a basis given some constraints. May28 asked Does linear dependency have anything to do when determining a span? May27 asked Proving that a subset is a subspace by showing a scalar combination. May27 asked When proving if a subset is a subspace, can I prove closure under addition and multiplication in a single proof? May27 asked Proving $||\vec{a}+\vec{b}|| = ||\vec{a}-\vec{b}|| \iff \vec{a} \perp \vec{b}$ May26 asked If $n$ vectors are linearly independent, is their span $\mathbb{R}^n$? May26 asked Why is this simplex procedure not working? $\min z = y - x + 1$ May26 asked About finding points in a plane given its normal equation. May25 asked From plane parametric to normal equations and viceversa. May25 asked About the orthogonal projection. May24 asked Determining the equation of a plane that contains one point and one line. May24 asked Proving that three points don't belong to the same line.