CHAPTER 7. ANALYTIC GEOMETRY- ^êÉ~=çÑ=~=nì~Çêáä~íÉê~ä=
=()± [()()ñN−ñO óN+óO +()()ñO−ñP óO+óP +
ON
p=+()ñP−ñQ(óP+óQ)+(ñQ−ñN)(óQ+óN)]=
==== =
=
Figure 95.
=
kçíÉW=få=Ñçêãìä~ë=SNTI=SNU=ïÉ=ÅÜççëÉ=íÜÉ=ëáÖå=EHF=çê=E¥F=ëç=
íÜ~í=íç=ÖÉí=~=éçëáíáîÉ=~åëïÉê=Ñçê=~êÉ~K==
=- aáëí~åÅÉ=_ÉíïÉÉå=qïç=mçáåíë=áå=mçä~ê=`ççêÇáå~íÉë=
Ç=^_= êNO+êOO−OêNêOÅçë()φO−φN =
=