GRE
$$\frac{1}{x}$$
$$\frac{1}{y}$$
y
8
a+1
$$\frac{1}{a}$$ - 1
IxI
|1-x|
1
$$|x|-|y|$$
$$0$$
The greatest possible value of $$\frac{5}{x-y}, where 6 ≤ x ≤ 7 and -1 ≤ y ≤ 5$$
5
25000 +道题目
252本备考书籍