[6xy-3(xy-2分之1x^2y]除3xy,其中x=2002,y=2003_数学解答

[6xy-3(xy-2分之1x^2y]除3xy,其中x=2002,y=2003

人气：160 ℃　时间：2020-06-20 04:50:56

解答

[6xy-3(xy-2分之1x^2y]除以3xy=[3xy-x^2y/2]/3xy=1-x/6
当x=2002,y=2003时,原式=1-1001/3=-998/3