代码如下：[n1,n2,n3,n4,n5,y1,y2]=solve('129660+5595*ln(n1/(n1+n2+n3+n4+n5))+6*y1+6*y2=0','68150+5595*ln(n2/(n1+n2+n3+n4+n5))+2*y1+4*y2=0','130570+5595*ln(n3/(n1+n2+n3+n4+n5))+8*y1+10*y2=0','140100+5595*ln(n4/(n1+n2+n3+n4+n5))+10*y1+14*y2=0','121270+5595*ln(n5/(n1+n2+n3+n4+n5))+8*y1+10*y2=0','6*n1+2*n2+8*n3+10*n4+8*n5=44','6*n1+4*n2+10*n3+14*n4+10*n5=46','n1','n2','n3','n4','n5','y1','y2')
