2013;
首先,m^2 - 2011m = 1 + m;m^2 + 1 = 2012m;
所以 m^2 - 2011m + 2012/(m^2+1)
=-1 + m + 2012/(2012*m)
=-1 + m + 1/m
=1 + (m^2+1) /m
=1 + 2012m/m
=2013
=2013
2013;
首先,m^2 - 2011m = 1 + m;m^2 + 1 = 2012m;
所以 m^2 - 2011m + 2012/(m^2+1)
=-1 + m + 2012/(2012*m)
=-1 + m + 1/m
=1 + (m^2+1) /m
=1 + 2012m/m
=2013
=2013