(1) 2001乘2004分之2003=2001X(2003/2004)=2001X2003/2004=(2002-1)(2002+1)/2004=(2002²-1)/2004=(4008004-1)/2004=4008003/2004=2000.0014970059880239520958083832.(2) 2001乘2004分之2003=2003/(2001X2004)...