GRE
The total number of points P in the xy-plane such that the distance between P and one of the axes is 10 and the distance between P and the other axis is 8
The total number of points Q in the xy-plane such that the distance between Q and one of the axes is 5 and the distance between Q and the other axis is 4
The diameter of the circular region
$$\sqrt{20}$$
x
3
The area of a square region with diagonal of length $$\sqrt{2}x$$
The area of a circular region with diameter of length x
The length of AB
$$2\sqrt{3}$$
2r
$$\frac{1}{r}$$
25000 +道题目
6本备考书籍