A(1,1),
M(2,1),k = 2
2.A(x,1/x),M(2x,1/x)
N(x,2/x),C(x,0)
BNMC 为菱形(BM,NC互为垂直平分线)
3.AM=x,AN=2/x-1/x = 1/x,NQ = x/2
AMNQ为梯形,面积为3x/2 * 1/x = 3/2
=APMN面积
A(1,1),
M(2,1),k = 2
2.A(x,1/x),M(2x,1/x)
N(x,2/x),C(x,0)
BNMC 为菱形(BM,NC互为垂直平分线)
3.AM=x,AN=2/x-1/x = 1/x,NQ = x/2
AMNQ为梯形,面积为3x/2 * 1/x = 3/2
=APMN面积