Valemite harjutamine

∀\vec{a}∈\mathbb{R}^{3}, \; ∀\vec{b}∈\mathbb{R}^{3} \; korral \; \vec{a} \; × \; \vec{b}=-\vec{b} \; × \; \vec{a}

\left(\overrightarrow{OA} \; × \; \overrightarrow{OB}   \right) ·\overrightarrow{OC}=\left|\begin{array}{} a_x & a_y & a_z \ b_x & b_y & b_z \ c_x & c_y & c_z \ \end{array}  \right| 

\lim_{ n \to \infty }\left(1+\frac{1}{n}   \right)^n=e

σ=\sqrt{\frac{\sum_{i}^{n}{(x_{i}-\bar{x})^2 }}{n}}

\int_{a}^{b}{f(x)dx=F(b)-F(a) }