Edit your comment OPTION ANGLE DEGREES OPTION ARITHMETIC COMPLEX DIM P(9),ANS(1000),Z(9) LET Q=9 SET WINDOW -5,5,-5,5 REM 9個は，虚部がすべて異なり，凸9角形をなし，虚部実部とも±5まで LET P(1)=COMPLEX(0,4) LET P(2)=COMPLEX(-2,3.1) LET P(3)=COMPLEX(-3.2,1.1) LET P(4)=COMPLEX(-3,-1.3) LET P(5)=COMPLEX(-1.4,-3) LET P(6)=COMPLEX(1,-3.5) LET P(7)=COMPLEX(3.4,-1) LET P(8)=COMPLEX(3.6,1) LET P(9)=COMPLEX(2.5,3) MAT PLOT POINTS,LIMIT Q:P MAT PLOT LINES,LIMIT Q:P PLOT LINES:P(Q);P(1) LET C=0 SECRET SendDelete
