∑ a b {\displaystyle \sum _{a}^{b}}
# {\displaystyle \#}
∫ − n n e x d x {\displaystyle \int \limits _{-n}^{n}e^{x}\,\mathrm {d} x}
x = a 0 + 1 a 1 + 1 a 2 + 1 a 3 + ⋯ {\displaystyle x=a_{0}+{\frac {1}{a_{1}+{\frac {1}{a_{2}+{\frac {1}{a_{3}+\cdots }}}}}}}
