/sci/ - Science & Math

>>12275236
Can someone tell me how pic related is even possible?
From https://arxiv.org/pdf/1811.04751v1.pdf

The term at the bottom is a rearrangement of the numerator of the exponential without the negative sign.
All variables in the bottom equation are matrices. I tried doing it by hand and figured some factorization was involved, and got through that, but I don't see how this is possible:

[math]-x^T\Sigma^{-1}\mu+\mu^T\Sigma^{-1}x=-2x^T\Sigma^{-1}\mu[/math]

>>12281700