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If $A$ is symmetric p.s.d, and $\langle u,v\rangle \leq 0$, is $u^{T} A v \leq 0$?

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#linear-algebra #matrices #vectors #positive-definite #positive-semidefinite
222
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Calculate the eigenvector (eigenvalue is given)

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#linear-algebra #matrices #vector-spaces #vectors
487
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length of vector (v-2w) ? and other matrix problems

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#linear-algebra #vectors
12.8k
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Finding the length of a 3-dimensional vector

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#linear-algebra #algebra-precalculus #vectors #3d
155
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Calculate the eigenvectors of this $2 \times 2$ matrix (problem because all equations result in $0=0$)

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#linear-algebra #matrices #vector-spaces #eigenvalues-eigenvectors #vectors
103
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Right hand rule not working with complex vectors?

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#complex-numbers #vectors #cross-product
75
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What is the name of this matrix operation?

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#matrices #vectors
70
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How to derive a general formula for unit vectors subtruction (which includes only the angles)

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#calculus #multivariable-calculus #trigonometry #vector-spaces #vectors
209
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Coordinate of ends of a irregular polygon

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#geometry #vectors
931
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Vector: Distinct Parallel lines

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#vectors
410
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Derivative in Vector vs Index Notation

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#multivariable-calculus #vectors #matrix-calculus #index-notation
520
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Finding Critical Points of Vector Function

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#linear-algebra #optimization #vectors
176
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Vector inequalities with known bounds

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#linear-algebra #inequality #vectors
193
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Finding those points from a set of points surrounding a specified point most closely

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#geometry #vectors
1.5k
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Is span of 3 vectors a subspace of $\mathbb{R}^2$?

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#linear-algebra #vector-spaces #vectors

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