LaTeX Math Editor

x^2 + 3x - 7 \frac{a+b}{2} \sqrt{r^2 + s^2} x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \sum_{k=1}^{n} k = \frac{n(n+1)}{2} \int_{0}^{\pi} \sin x \vec{a} \cdot \vec{b} \binom{n}{k} A \cup B = B \cup A x \in \R, x \neq 0 \lim_{x \to \infty} \frac{1}{x} = 0 \sqrt[3]{8} = 2 f'(x) = 2x 3^{-2} = \frac{1}{3^2} \triangle ABC \sim \triangle DEF 1/2 + 3/4 (a+b)/(c-d)