단위접벡터,unit_tangent_vector

Difference between r1.8 and the current

@@ -6,7 +6,7 @@
$\vec{T}(t)$

[[곡률,curvature]] 정의에 쓰임.
$\kappa(s)=|| \frac{d\vec{T}}{ds} || = ||\frac{d\vec{T}}{dt}\frac{dt}{ds}|| = \frac1{||\vec{F}{}'(t)||}||\vec{T}{}'(t)||$
$\kappa(s)=\left\| \frac{d\vec{T}}{ds} \right\| = \left\|\frac{d\vec{T}}{dt}\frac{dt}{ds}\right\| = \frac1{\left\|\vec{F}{}'(t)\right\|}\left\|\vec{T}{}'(t)\right\|$
(O'Neil AEM p350)

See also:
@@ -17,5 +17,4 @@
----
AKA '''단위접선벡터'''
Up: [[단위벡터,unit_vector]] [[접벡터,tangent_vector]]


$\vec{T}(t)=\frac{\vec{r}{}'(t)}{|\vec{r}{}'(t)|}$

단위접선벡터(unit tangent vector) : 단위벡터 and 접선벡터? chk

벡터의 길이로 나누어서 1로 만드는??
$\vec{T}(t)$

곡률,curvature 정의에 쓰임.
$\kappa(s)=\left\| \frac{d\vec{T}}{ds} \right\| = \left\|\frac{d\vec{T}}{dt}\frac{dt}{ds}\right\| = \frac1{\left\|\vec{F}{}'(t)\right\|}\left\|\vec{T}{}'(t)\right\|$
(O'Neil AEM p350)

See also:
곡선,curve과 곡률,curvature에 관련.
곡선,curve#s-3(곡선의 접선)에 단위접벡터언급.
기타 backlink 체크할 것.