使ç¨èç¹çµåæ³ï¼èç¹1ã2ã3ççµååå«ä¸ºU1ãU2好U3ï¼æä¸ç«¯ä¸ºå ¬å ±èç¹ã
èç¹1ï¼U1/100+ï¼U1-U3ï¼/20+ï¼U1-U2ï¼/50=4ï¼
èç¹2ï¼ï¼U2-U1ï¼/50+4+ï¼U2-U3ï¼/40=2+10ï¼
èç¹3ï¼U3/25+ï¼U3-U2ï¼/40+2+ï¼U3-U1ï¼/20=0ã
åç®æ¹ç¨ï¼8U1-2U2-5U3=400ï¼
-4U1+9U2-5U3=1600ï¼
10U1+5U2-23U3=400ã
解æ¹ç¨ç»ï¼U1=264.3088ï¼U2=397.4277ï¼U3=183.9228ã
æ以ï¼U12=U1-U2=264.3088-397.4277=-133.1189ã
U23=U2-U3=397.4277-183.9228=213.5049ã
U13=U1-U3=264.3088-183.9228=80.386ã