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CHAPTER 7. ANALYTIC GEOMETRY
609. jáÇéçáåí=çÑ=~=iáåÉ=pÉÖãÉåí=
ñ + ñ
ñ = N O I= =λ NK=
M
O
=
=
=
7.2 Two-Dimensional Coordinate System
=
mçáåí=ÅççêÇáå~íÉëW= ñ I= ñI= ñI= ó I= óI= ó=
M
O
O
N
N
M
mçä~ê=ÅççêÇáå~íÉëW= ϕIê =
oÉ~ä=åìãÄÉêW=λ ==
mçëáíáîÉ=êÉ~ä=åìãÄÉêëW=~I=ÄI=ÅI==
aáëí~åÅÉ=ÄÉíïÉÉå=íïç=éçáåíëW=Ç=
^êÉ~W=p=
=
=
610. aáëí~åÅÉ=_ÉíïÉÉå=qïç=mçáåíë=
Ç = (^_ = )ñ − O + (ñ ó )ó − O =
O N O N
=
=
=
Figure 88.
131
