因为：m^2+n^2-8m-10n+41=0所以m^2-8m+16+n^2-10n+25=0所以(m-4)^2+(n-5)^2=0所以m=4,n=5所以m/n-n/m=4/5-5/4=-9/20
m^2+n^2-8m-10n+41=0m^2-8m+16+n^2-10n+25=0(m-4)^2+(n-5)^2=0m=4 n=5m/n-n/m=-9/20
