Inline math: $ax^2+bx+c=0$

Another equation:

x1,2=−b±b2−4ac2ax_{1,2} = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}

Aligned equations:

x=A(cos⁡θ−vsin⁡θ)y=B(sin⁡θ+vcos⁡θ)z=Cεv.\begin{align} x &= A (\cos \theta - v \sin \theta)\\ y &= B (\sin \theta + v \cos \theta)\\ z &= C \varepsilon v. \end{align}

now some code:

import numpy as np
for i in np.arange(10):
    print(np.sin(i))