,(X)_(5))gt 15) ;-|||-(2) (min((X)_(1),(X)_(2),... ,(X)_(5))lt 10) ;-|||-(3) (max((X)_(1),(X)_(2),... ,(X)_(5))lt 15 ((X)_(1),(X)_(2),... ,(X)_(5))lt 10) 。

,(x)_(5)} gt 15} ;-|||-(2) min{ {X)_(1),(X)_(2),... ,(X)_(5)} gt 10} .

,(X)_(5))gt 15} ;-|||-(3)求概率 min({X)_(1),(X)_(2),... ,(X)_(5))lt 10} .

2.解方程组 ) (x)_(1)+(x)_(2)+(x)_(3) (x)_(1)+(x)_(2)-(x)_(3)-(x)_(4)=1 5(x)_(1)+5(

[单选题]概率P{max(X1，X2，X3，X4，X5)＞15}=( )。A．0.2533B．0.2893C．0.2923D．0.2934

解下列线性方程组 ) (x)_(1)+2(x)_(2)+3(x)_(3)=1 2(x)_(1)+2(x)_(2)+5(x)_(3)=2 3(x)_(1)+5(

用消元法解下列线性方程组:-|||- x1+3x2+5x3-4x4 =1, x1+3x2+2x3-2x4+x5=-1, x1-2x2+x3-x4-x5=3, x

解方程组： ) (x)_(1)-(x)_(2)-(x)_(3)=2 2(x)_(1)-(x)_(2)-3(x)_(3)=1 3(x)_(1)+2(x)_(2)

解方程_(2)-3(x)_(3)+4(x)_(4)=-5-|||-x1- 2x3+324 =-4-|||-(x)_(1)+2(x)_(2)-5(x)_(4)=1

) (x)_(1)+3(x)_(3)geqslant 3 2(x)_(2)+2(x)_(3)geqslant 5 (x)_(1),(x)_(2),(x)_(3)

3(x)_(1)+2(x)_(2)-5(x)_(3)=0 .