可能题目有误，是求：a^2012*2(b^2011)x=3, y=-2 ax+by= -1 ax-by= 5 求出 a=2/3 b= 3/2 a^2012*2(b^2011)=(2/3)(2/3)^2011*2(3/2)^2011=(2/3)(2)[(2/3)(3/2)]^2011=4/3
