Math

It is easy to do maths equations with gitbook thanks to KaTeX plugin.

The quadratic formula is: −b±b2−4ac2a-b \pm \sqrt{b^2 - 4ac} \over 2a

Or this is more interesting:

1+q2(1−q)+q6(1−q)(1−q2)+⋯=∏j=0∞1(1−q5j+2)(1−q5j+3),for ∣q∣<1.\displaystyle 1 + \frac{q^2}{(1-q)}+\frac{q^6}{(1-q)(1-q^2)}+\cdots = \prod_{j=0}^{\infty}\frac{1}{(1-q^{5j+2})(1-q^{5j+3})}, \quad\quad \text{for }\lvert q\rvert<1.