设A(x 1 ,y 1 ),B(x 2 ,y 2 )是椭圆 x 2 b 2 + y 2 a 2 =1 ,(a>b>0)上的两点,已知向量 m =( x 1 b , y 1 a ), n =( x 2 b , y 2 a ),且 m ? n =0 ,若椭圆的离心率 e= 3 2 ,短轴长为2,O为坐标原点: (Ⅰ)求椭圆的方程; (Ⅱ)若直线AB过椭圆的焦点F(0,c),(c为半焦距),求直线AB的斜率k的值; (Ⅲ)试问:△AOB的面积是否为定值?如果是,请给予证明;如果不是,请说明理由.
【单选题】The freedom to lead different types of life is reflected in the person's capacity set. The capacity of a person depends on a variety of factors, including personal characteristics and social arrangeme...
A.
freedom and capacity of human beings are closely related to each other
B.
capacity is an underlying idea of the problematic concept of freedom
C.
human capacity depends on personal characteristics and social arrangements
D.
we could never actually get the correspondent capacity in reality