# This is page1 (w/math)

Welcome to page1

# I will add all math markup here

Using KaTeX, Khan Academy's TeX (LaTex) based math typesetting library.

# Pythagoran theorem

$c^2 = a^2 + b^2$

# Bayes theorem

$P(A | B) = \frac {P(B | A)P(A)} {P(B)}$

# Quadratic formula

$x_{1,2} = \frac {-b \pm \sqrt{b^2 - 4ac}} {2a}$