GRE
The standard deviation of the original 5 prices
The standard deviation of the resulting 5 prices after the 3 prices decreased
z
4
x
0
The number of kilometers in a light-hour
$$10^{10}$$
$$x^{-3}$$+$$y^{-3}$$
$$(x+y)^{-3}$$
The area of ABIH
The area of BJFI
25000 +道题目
245本备考书籍