k n + 1 = n 2 + k n 2 − k n − 1 {\displaystyle k_{n+1}=n^{2}+k_{n}^{2}-k_{n-1}}
cos ( 2 θ ) = cos 2 θ − sin 2 θ {\displaystyle \cos(2\theta )=\cos ^{2}\theta -\sin ^{2}\theta }
lim x → ∞ exp ( − x ) = 0 {\displaystyle \lim _{x\to \infty }\exp(-x)=0}
n ! k ! ( n − k ) ! = ( n k ) {\displaystyle {n! \over k!(n-k)!}={n \choose k}}
∑ i = 1 10 t i {\displaystyle \sum _{i=1}^{10}t_{i}}
∫ 0 ∞ e − x d x {\displaystyle \int _{0}^{\infty }\mathrm {e} ^{-x}\,\mathrm {d} x}
1.344 M e g a b i t s / 8 = 0.168 M e g a B y t e s p e r s e c o n d {\displaystyle 1.344Megabits/8=0.168MegaBytespersecond}
