(-2/3)^2002*(1又1/2)^2003
=(2/3)^2002*(3/2)^2003
=(2/3)^2002*(2/3)^(-1*2003)
=(2/3)^2002*(2/3)^(-2003)
=2/3^(2002-2003)
=2/3^(-1)
=3/2
(-2/3)^2002*(1又1/2)^2003
=(2/3)^2002*(3/2)^2003
=(2/3)^2002*(2/3)^(-1*2003)
=(2/3)^2002*(2/3)^(-2003)
=2/3^(2002-2003)
=2/3^(-1)
=3/2