LATEX LIAN XI

$ a^2 \( \) 100 ~m ^{3}$

\(\lim_{n \to \infty} \sum_{k=1}^n \frac{1}{k^2} = \frac{\pi^2}{6}\)

\(C {}^{12}_{6}\)

$sum_

\(\phi\)

\(\mu\)

\(f[i][j] = max( f[i+1][j^2],f[i][j])\)

\(\frac {x^2} {z}\ \neq w\)
\(\frac {x^2} {z}\ = w\)

\(y'\)

\(\sum_{k}^n\)