F 10 = 55 {\displaystyle F_{10}=55\,\!}
∬ R d x d y {\displaystyle \iint \limits _{R}\,dx\,dy\,\!}
lim x → ∞ f ( x ) = L {\displaystyle \lim _{x\to \infty }f(x)=L\,\!}
