\[ V = IR \]
\[ P=VI \]
\[ a^{2}+b^{2} = c^{2} \]
\[ \log xy = \log x + \log y \]
\[ \frac{df}{dt}=\lim_{h \to 0}\frac{f(t+h)-f(t)}{h} \]
\[ F = G \frac{m_{1}m_{2}}{d^{2}} \]
\[ i^{2}=-1 \]
\[ F - E + V = 2 \]
\[ \Phi (x)=\frac{1}{\sqrt[]{2\pi\sigma }}e^{^{\frac{(x-u)^{2}}{2\sigma ^{2}}}} \]
\[ \frac{\partial^{2} u}{\partial t^{2}}= c^{2}\frac{\partial^{2} u}{\partial x^{2}} \]
\[ X(\omega) = \int_{-\infty}^{\infty} x(t) e ^{-j \omega t} \mathrm{d}t = \int_{-\infty}^{\infty} x(t) e ^{-j 2 \pi f t} \mathrm{d}t \]
\[ \dfrac {\partial \mathbf u} {\partial t} + \mathbf u \cdot \nabla \mathbf u - \nu \nabla ^2 \mathbf u = - \nabla w + \mathbf g \]
\[ E = mc^{2} \]