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Is a square matrix $A$ where $A^3$ is the zero matrix invertible when added to the identity matrix $(I+A)$?

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#linear-algebra #matrices
228
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To find the number of matrices

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#matrices
102
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inverse of a $2\times2$ matrix, Gaussian elimination with unknown $x$

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#matrices #modular-arithmetic #inverse #gaussian-elimination
34
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analytical matrix inversion?

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#matrices #inverse
33
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Evaluating Determinant (answer check)

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#linear-algebra #matrices #determinant
357
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Variation of Parameters on a Matrix System

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#matrices #ordinary-differential-equations
81
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Finding types of stability for a homogeneous linear system

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#linear-algebra #matrices #geometry #ordinary-differential-equations #multivariable-calculus
289
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How to create a large, well-conditioned symmetric PD matrix?

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#matrices #optimization #numerical-methods #numerical-linear-algebra #numerical-optimization
60
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Uniqueness of a solution of $\ x' = Ax + b(t) \ $ that tends to $0$ in $+\infty$

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#real-analysis #matrices #ordinary-differential-equations
265
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Nth power of a matrix

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#matrices #power-series #markov-chains
600
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Solutions for a 3x3 ODE system with one eigenvalues (m=3).

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#matrices #ordinary-differential-equations #systems-of-equations
27
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Is the following a matrix norm?

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#linear-algebra #matrices #normed-spaces
119
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How to rearrange this matrix equation to find x

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#matrices
70
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Is the following matrix orthogonal?

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#linear-algebra #matrices #orthogonality
61
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Simplify the following expression by matrix calculus and orthonormal properties of eigenfunctions

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#matrices #definite-integrals #matrix-equations #matrix-calculus #eigenfunctions

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