Matrix Derivative
[Transpose of Matrix](https://texonom.com/transpose-of-matrix-639bc5b5563c4c54b3e9ef0f37342bee) 


행렬 크기 줄이는 방향으로, 안되면 transpose
$$x^TB \rightarrow B \newlinex^Tb \rightarrow b \newlinex^Tx \rightarrow 2x \newlinex^TBx \rightarrow 2Bx \newliney^TBx \rightarrow B^Ty \newline$$
### Matrix Derivative Usages
|Title|
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|[Hessian Matrix](https://texonom.com/hessian-matrix-e1ebbf5284284a1793233973648ef0b6)|



> [Untitled](https://atmos.washington.edu/~dennis/MatrixCalculus.pdf)

> [Untitled](http://www.gatsby.ucl.ac.uk/teaching/courses/sntn/sntn-2017/resources/Matrix_derivatives_cribsheet.pdf)






