^xTlT3=1\n`9'(1\n-1+2+3),
'(1,4),\rABC=V32+32=3V2'BD=V12+12-^2'DC=V42+22=2V5,\r'<CD2^DB2+CB2,\r...BCDC\nJ/>8c=90°,\rNAOB=NDBC,\rRtZ\NO8pRtZV)8C!\n=^=\n3V2_\r=>\rBDV22BC3V22\rxxxA-O\nO\B\rBDBC\rABCDsAOBA-\r(III)wVW=-/+2x+3"Z^x=l,`9^'(1,4),\r(1)0WxW3s\rkx=lm\nynoO=4Tkx=3m\nynqO=0T\r(2)k/0y&Y+1sVW"Z\nkm nqOq=-P+2/+3,noOEvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\rp=-(f+1)2+2(z+1)+3,\rYp-q=-(/+1)2+2(/+1)+3-(-r2+2z+3)=3,
-2/+l=3,f=-l.\r¤kf+l=lm\n¥mp=4,q=3,¦§¨\n©ªT\r«k/0yfWxWf+1sVW-B"Z?\r¥mp=4,p-4=4-(-/2+2/+3)=3,
t1-It-2=0wa=1+.(©)\n=1-^3(©)T\rP®p-¯=4-(/+1)2+2(/+1)+3]=3,
t=±F(¦§¨\n©ª)T\r´k\n=1m\n¥mp=4,=3,¦§¨\n©ªT\rµk/0yfWxWf+lsVW"Z¶\nkx=fm noOp=-·+2¸3,nqO\rq=-(f+1)2+2(z+1)+3,\rp-q=-¹+2¸3-(f+1)2+2(z+1)+3]=3,f=2.\rº&\nf=-1Ptp2.