函数(x)=((2x-1))^4，则(x)=((2x-1))^4 (x)=((2x-1))^4

4.已知 sim B(100,0.5) ,则 E(X)= __ ,D(X)= __ o-|||-E(2X-1)= ,D(2X-1)=

函数=ln (2x-1)的定义域为=ln (2x-1)函数的定义域为

4.设连续型随机变量X的密度函数为:-|||-f(x)= { x, 0leqslant xleqslant 2 0, .-|||-(1) (|2X-1|l

已知f（(1)/(x)）=(3x+1)/(2x-1)，则f（x）=（ ）A. $\frac{3-x}{2+x}$B. $\frac{3+x}{2-x}$C. $

设随机变量X~N(2,4)，Y=2X-1，则Y~()A. N(3,7)B. N(4,8)C. N(3,15)D. N(3,16)

设随机变量X~N(2,4),Y=2X-1,则Y~()A. N(4,8)B. N(3,16)C. N(3,15)D. N(3,7)

设随机变量X~N(2,4), Y=2X-1, 则 Y~()A. N(3,15)B. N(4,8)C. N(3,7)D. N(3,16)

设随机变量X~N(2,4),Y=2X-1,则Y~()A. N(3,15)B. N(3,16)C. N(3,7)D. N(4,8)

求反函数=arccos (2x-1)求反函数

(6) (x)=dfrac (sqrt {2x-{x)^2}}(lg (2x-1)) ;