Test Post :

\(\displaystyle \frac{dy}{dx}(2x^2+6) = 4x \\ \log_{5} 25=2\)

\(\displaystyle \sqrt[3]{2}\)

\(\displaystyle \arctan 45\)

\(\displaystyle \sum x_i\)

\(\displaystyle 178 \pm 5\)

\(\displaystyle this \Leftrightarrow \\ this\)

\(\displaystyle \begin{array}{l|cr|}4&1&2\\-4&-1&-2\\\hline\end{array} \)

\(\displaystyle f(x)=\left\{\begin{array}{cc}0,&\mbox{ if }x\leq 0\\1, & \mbox{ if } x>0\end{array}\right.\)

\(\displaystyle \left(\begin{array}{cc}1&9\\7&1\end{array}\right) \)

\(\displaystyle \begin{array}{cc}1&0\\0&1\end{array} \)

\(\displaystyle \begin{array}{lcr}4&1&2\\-4&-1&-2 \\-4&-1&-2 \end{array} \)