#noindex
##===내적,inner_product =,inner_product 내적 inner_product
Sub:
[[내적공간,inner_product_space]]

Rel
scalar_product - [[스칼라곱,scalar_product]]
 WtEn:scalar_product
 [[VG:스칼라곱,scalar_product,dot_product]]
[[곱,product]] [[프로덕터,product]]

[[VG:내적,inner_product]]

= 내적 vs 외적 =
$\overrightarrow{A}=(a_1,a_2,a_3),$
$\vec{B}=(b_1,b_2,b_3)$ 일 때
내적 $\vec A\cdot\vec B = a_1b_1 + a_2b_2 + a_3b_3$
외적 $\vec A\times\vec B = (a_2b_3 - a_3b_2,\, a_3b_1 - a_1b_3,\, a_1b_2 - a_2b_1)$
외적의 순서는 [[순환순서,cyclic_order]]를 기억하면 easy. via https://youtu.be/XlAiD_JMdwg?t=1136