Principes de la géométrie analytique. Géométrie de l'espace, par L. Painvin.

161

X3-x _ x,. -X, Y, -x.,.Y
XY,-XT,., XA- Y,
( XY. - XZ Y X, Y.- X9 Y.4
Zl T,- ZX 3f Z T,- 2 T;,
Je T/- 2T <n o Z9 Tz Z~- fe T^
Ts X,-, X T4 X I- T, XOZL =: ---------------- ' - *
\ T3 X3- 2 X5 T4 X2- T9 4. tlppo l co le p b, oe -pa/ eai eytt ouzdC eceorl
yde e, itLe,u_:
' J. e'- cttple- Ax+.B -y+ye o,.:en< COZzCO e: A1X -+ ), 3 y+f c -YS-.
Cfn_ pei g paink3 le s/aze- caupJ0 oL ZOUC gekM Yo de -Plac a- pkea',-ant-Ze
(i g pft~c-r~7a- ct, 177):

23.

Q (A<^- -AiC)-B1BI + VB2-AACVBt-4A1C
2(A C, +AC)- B B,- VD AC /C '-B-I A, C1
de ^ip TLn ITU.5e'ca- bXThfgfcrm e rLutte- J l oLn cL
(26) C(AC.-4-A, C))-B B, 9 o.
1^ eOtzlx. x O- ltt-e
IS IL wQi owrW gomosIW '(lc. JW o6j2 o
| I on cons^e~L, leuo dut1iuei leJ p.izn~ 1a' J.e... dr.....i-.h i D et/ '1,.e5..,te 'o c 'it3ar nircjz -
| ' l>tpr iqeo, leAcstt'z u Toztr t k/' d ac7e Z l/^3tornli cor'cepoinL zzInprjLat ctp0n oev i ef 4 lZa ^&e alt:utjton, e't^c^vzOpifruelrnerL
|| ooL sozb corcre/pn artllartZ 1 on t-lb pz ira 1orn0oLoc tu.
Icc1 ~Oe z/.po7 an ha cmonzqtze a' /zibrzrepaJ t rr 1 ue1 f rzetz5ZO J fizftn xezdalr-u z ew ra _e l aa L a de-ztu fe_,?rom ljAtpLzec/2?
o7'c uelea a letoc^ ctcotfes D et -D coz ctlzen- o ay ce-qzron- appepi2 leuz I t wize md r~ tr e?.
| (bez c lvzdtzm-ezo reeAzze- Qle meme g ~- ea-fZ /az3 z re t r~r zi zzaz- ~ ~~.t. (StL py on:
Ia ld( u v tXu- -poii 9Se 2 C'ok qz ZC, co o 17nm e-^ avppa,'7izan- / to 2 econ J Leoza / z r7, oirzcf eC - a Jo - S o zofiue
|k le< aLa Jecondl - r^ zr.on s (:;,.=,,l7,P,. 17o. ~ *..).
7L tzno e1,Z e. pzL,-,, aL zzzr yne m e a lar-jpf n - ne mOnze droil, ee dc'- lo, e1o e L,.t.9
f T C0toiI4c. - enJai- rJ. z _x z ce-itt I fvce/ea at7/f efri & ceS d rewzr /S Zceai <fetr ta^ 1 t f n *c p-^-ignaL-4 l GZoya4J c /
/p2. _ olea s;catc, t-; co,,ce(por.z) un p.nr. ct zn. jef, sd7 l /L 'zxZe cea.tzi e~bcectfz'^iezrenrt.
-|7 ~ui[ zte -e..z.e-:
| )ezza _ idcoIed ~jue/?on'zze lt eLd Aezrmznenit J ^c cSztcrUr ratet dzL d47tcit dlon-c5 r oma7-}p z t iU t.
C( aj ettaY -C<eWea-c rSo m oa?Zz z l e ms me ar e ornt Leu4.r- plaru( io0ez- la t edn-cz yrrzn( C-a 6Cz alp1Peff/ ye
ctott, tOU-Z -,pla, qt, c s1taleze c,67nrr1z- a ppacera7nt- <Z /f' j azL iLtf a '& eaxemp,. coe LdJ - n Ocz
C(,t triue q z.1 z,, / /.~ on 4o w,,_ Iq-, e d;rue 3t0.W '.0,
i tz n cue olet jonr4teL coft-e- et0 W40 TfU, e- 1z t- 4e- upou n co ec7Oei azett -
^hb, m_ ccndrt^^e Ctn-w va^p7 na G Gt ^. 1,, G Zzi n 7 Sar o uf. mt C^a^n~f |La ^c ettrfj 'ce^ z