Question Number 18909 by Nayon last updated on 01/Aug/17
$${What}\:{does}\:\underset{ } {{a}}.\underset{ } {{b}}\:\:{and}\:\underset{ } {{a}}×\underset{ } {{b}}\:{means}\:? \\ $$$${someone}\:{please}\:{explain}\:{it}. \\ $$
Commented by mrW1 last updated on 02/Aug/17
$$\mathrm{please}\:\mathrm{read}\:\mathrm{a}\:\mathrm{book}\:\mathrm{or}\:\mathrm{an}\:\mathrm{internet}\:\mathrm{site} \\ $$$$\mathrm{about}\:\mathrm{vectors}. \\ $$