log_a \; x=\frac{log_b \; x}{log_b \; a}

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

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

σ \; = \; \sqrt{\frac{\sum_{i=1}^{n}{(x_i-\bar{x})^2 }}{n}}

Logaritmi valem

Newton-Leibnizi valem

Arvu e valem

Standardhälve

a = true
b = true
c = true
d = true