sidereal

Math operator$\nabla$ is \nabla$\partial$ is \partialdifferential use d$\sum$ is \sum$\sqrt[n]{expression}$ is \sqrt[n]{expression}fraction is \frac{numerator}{denomenator}Greek Alphabet$\alpha$ is \alpha$\beta$ is \beta$\epsilon$ is \epsilon$\theta$ is \theta$\zeta$ is \zeta Read More

$f: R^{m*n} \rightarrow R$, $A \epsilon R^{m*n}$$\nabla_Af(A) \epsilon R^{m*n} = [\frac{\partial f(A)}{\partial A_{ij}}]$$\nabla_x b^Tx = b$ Read More