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15
How to solve this exponential equation?
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13
Definition of reducible matrix and relation with not strongly connected digraph
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10
Finding the Fourier series of a piecewise function
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8
Can we infer that $\det(A+D)$ is always $\neq 0$, with $D$ diagonal matrix and $\det A=0$?
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8
Solving a radical equation for real $x$
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8
Show by example that $A \ge B \ge 0 \implies A^2 \ge B^2 \ge 0$ is not true in general
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7
Probability of an event occuring at least once in 50 tries
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7
How do i determine maximum or minimum at (1,1) of function $ f(x,y)=(x-y)^{4} + (y-1)^{4}$
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7
Proving that a symmetric matrix is positive definite iff all eigenvalues are positive
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7
How to prove $\frac xy + \frac yx \ge 2$
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7
Prove that the product of two invertible matrices also invertible
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6
Suppose that $P(A) = \frac{1}{2}$ and $P(B)=\frac{1}{4}$. What can we say for sure about $P(A∪B)?$
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6
$A$ is a square matrix. Prove that if $v$ is a vector in Row $A$ and Null $A$, then $v=0$.
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5
In a 30-60 right triangle the side opposite the 30 degree angle is half the length of the hypotenuse. Why?
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5
Unique Positive Definite Square Root of a Positive Definite Matrix
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5
Finding linear transformation for vector space of matrices
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5
Prove the matrix is not diagonalizable
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