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Prove $(I-J_n)^{-1}=I-\frac{1}{n-1}J_n$

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#linear-algebra #matrices #inverse
82
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Out of curiosity: what is the relation between a number and its equivalence class?

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#number-theory #modular-arithmetic #inverse #equivalence-relations
39
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Derivatives of trace of complicated function

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#matrices #derivatives #inverse #trace
563
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Get back original value after some modular arithmetic

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#modular-arithmetic #inverse
223
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Why does the graph of $ cos^{-1}(x)$ differ from the graph of the relation defined by the formula : $x= cos(y)$

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#algebra-precalculus #functions #trigonometry #soft-question #inverse
36
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What is the inverse function of $f(x,y) = (x,y,0)$?

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#functions #inverse #inverse-function
449
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Do the moments of the reciprocal normal distribution exist?

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#probability-distributions #normal-distribution #inverse #standard-deviation #means
53
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How can I find inverse for this functions?

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#functions #inverse
206
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Show that: $\sum_{k=0}^{\infty}\arctan\left(\frac{6k^2+4k}{4k^4+12k^3+13k^2+6k+5}\right)=\frac{\pi}{4}$

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#sequences-and-series #trigonometry #inverse #pi
51
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Inverse function for $f(x) = \frac{\sqrt{x}}{\sqrt{2x+2}}$

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#real-analysis #calculus #analysis #inverse
320
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Is the product of a singular matrix and its transpose PSD?

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#matrices #eigenvalues-eigenvectors #hilbert-spaces #inverse #positive-definite
82
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Calculate the inverse of a matrix of variable size

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#linear-algebra #matrices #inverse
222
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Difference between matrix transpose and inverse in solving matrix equations

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#matrices #inverse #transpose
99
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For which $a$ does it hold that $\det(A)=0$?

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#linear-algebra #matrices #vectors #determinant #inverse
157
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Hermitian scalar product: When is it invertible?

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#linear-algebra #matrices #inverse #symmetric-matrices #hermitian-matrices

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