li takone A et B et C 3 no9ate fi lfadaeE wa f wa g mene E nahwa E :
f(M)=M'<=>MM'=MA-MB+2MC (motajihate)
g(M)=M'' <=> MM''=3MA-MB+MC (motajihate)
1-a-ohssobe MA-MB+2MC (motajihate) bidalalate MG1 (motajiha) hayte G1 marjihe (A;1)et (B;-1) et (C; 2)
b- ohssobe 3MA-MB+MC (motajihate) bidalalate MG2(motajiha) hayte G2 marjihe (A;3) et (B ;-1) et (C;1)
c- issetantije tabi3atec f wa g
2- nafetaride ana l fadae E mansobe yla ma3lam dicarti (o,i,j,k) wa na3tabir mosta9im (delta) mare mene I(0;0;1) wa lmowajahe bilmotajiha i+j
hadid sorate (delta) bi tatbi9 f wa sorate (delta) bi tatbi9 g.
hadid sorate (delta) bi tatbi9 fog.
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