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Multiplicative inverses of $\Bbb Z \times \Bbb Z$

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#abstract-algebra #group-theory #inverse
311
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When is the linear combination of matrixes invertible.

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#linear-algebra #inverse
297
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Find $(f^{-1})'(3)$

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#calculus #real-analysis #derivatives #inverse #inverse-function
35
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Coefficient estimation in the heat equation

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#inverse #boundary-value-problem
2k
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Proving that the product of two invertible matrices is also invertible, without determinants

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#linear-algebra #matrices #inverse
732
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Find the inverse function of $f(x) = \frac{x^3+3x}{2}$

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#algebra-precalculus #inverse #inverse-function
244
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Is there a trick to invert $I+ABA$ given a spectral decomposition of $A$ and $B$?

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#linear-algebra #matrices #eigenvalues-eigenvectors #inverse #matrix-decomposition
343
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Evaluating $\operatorname{arccos} \frac{2}{\sqrt5} + \operatorname{arccos} \frac{3}{\sqrt{10}}$

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#trigonometry #summation #inverse
60
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Inverse involving polynomial and trigonometric understanding

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#trigonometry #inverse #inverse-function
287
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Finding the inverse of $A$

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#linear-algebra #matrices #inverse #companion-matrices
137
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randomized approximate matrix inverse or adjoint of a square matrix

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#determinant #inverse #approximation-theory #adjoint-operators #random-matrices
117
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inverse of cardioid $(x,y) \rightarrow (x+0.5(x^2-y^2),y(1+x))$

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#real-analysis #inverse #curves
72
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How to find the inverse of $(A\otimes A)(B\oplus B)^{-1}(A\otimes A)+I$ without forming the Kronecker product?

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#linear-algebra #matrices #inverse #matrix-decomposition #kronecker-product
2.3k
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When is AXB equal to BXA in the case of square matrices?

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#matrices #inverse #inverse-function
426
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Algorithms for Computing the Determinant of a Hankel Matrix

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#matrices #determinant #inverse

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