\LaTeX is very useful!

\sum_{i=1}^{n} i = \frac{n(n+1)}{2}

\LaTeX is very useful!

\sum_{i=1}^{n} i = \frac{n(n+1)}{2}

3 Likes

\LaTeX is beautful!

\int_{a}^{b} x^2 + e^xdx

3 Likes