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CHAPTER 7. ANALYTIC GEOMETRY
é
c ñ M ó I M + I=
O
`ççêÇáå~íÉë=çÑ=íÜÉ=îÉêíÉñ=
Ä Q ~Å − Ä O
ñ = − I= ó = ~ñ + Äñ + Å = K=
O
M
~ O M M M ~ Q
=
=
=
Figure 122.
=
=
=
7.8 Three-Dimensional Coordinate System
=
mçáåí=ÅççêÇáå~íÉëW= ñ I= ó I=ò I= ñI= óI=òI=£=
M
M
M
N
N
N
oÉ~ä=åìãÄÉêW=λ ==
aáëí~åÅÉ=ÄÉíïÉÉå=íïç=éçáåíëW=Ç=
^êÉ~W=p=
sçäìãÉW=s=
=
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