已知集合A={y|y=-x^2+2x-1},B={y|y=x^2-3},则A交B等于多少?
问题描述:
已知集合A={y|y=-x^2+2x-1},B={y|y=x^2-3},则A交B等于多少?
答
the answer is (5^1/2+1)/2 and (1-5^1/2)/2
已知集合A={y|y=-x^2+2x-1},B={y|y=x^2-3},则A交B等于多少?
the answer is (5^1/2+1)/2 and (1-5^1/2)/2