设集合,下列说法中确切的数量有个 (1); (2); (3); (4);/ananas/latex/p/1802644/ananas/latex/p/954674/ananas/latex/p/954669/ananas/latex/p/954660/ananas/latex/p/954656
设集合,下列说法中确切的数量有个 (1); (2); (3); (4);/ananas/latex/p/1802644/ananas/latex/p/954674/ananas/latex/p/954669/ananas/latex/p/954660/ananas/latex/p/954656
不等式3x+2>+4的解集是/ananas/latex/p/912/ananas/latex/p/912
不等式3x+2>+4的解集是/ananas/latex/p/912/ananas/latex/p/912
若X~N(),且E(X)=5,D(X)=4,则= ,=/ananas/latex/p/310942/ananas/latex/p/200/ananas/latex/p/297
若X~N(),且E(X)=5,D(X)=4,则= ,=/ananas/latex/p/310942/ananas/latex/p/200/ananas/latex/p/297
已知4阶方阵的秩为2,则= 。/ananas/latex/p/278/ananas/latex/p/441549
已知4阶方阵的秩为2,则= 。/ananas/latex/p/278/ananas/latex/p/441549
/ananas/latex/p/599558: -4/3|0|1|4/3
/ananas/latex/p/599558: -4/3|0|1|4/3
/ananas/latex/p/515893/ananas/latex/p/515894/ananas/latex/p/503271/ananas/latex/p/515901/ananas/latex/p/515902/ananas/latex/p/515907/ananas/latex/p/515908
/ananas/latex/p/515893/ananas/latex/p/515894/ananas/latex/p/503271/ananas/latex/p/515901/ananas/latex/p/515902/ananas/latex/p/515907/ananas/latex/p/515908
设X~N(μ,4),Y~N(μ,9),a=P{Xμ-2},b=P{Yμ+3},则/ananas/latex/p/1237/ananas/latex/p/990
设X~N(μ,4),Y~N(μ,9),a=P{Xμ-2},b=P{Yμ+3},则/ananas/latex/p/1237/ananas/latex/p/990
已知()=0.4,则()=( )/ananas/latex/p/152/ananas/latex/p/278/ananas/latex/p/847/ananas/latex/p/281/ananas/latex/p/152/ananas/latex/p/4781/ananas/latex/p/7419/ananas/latex/p/6547
已知()=0.4,则()=( )/ananas/latex/p/152/ananas/latex/p/278/ananas/latex/p/847/ananas/latex/p/281/ananas/latex/p/152/ananas/latex/p/4781/ananas/latex/p/7419/ananas/latex/p/6547
________,________,________,________. /ananas/latex/p/365732/ananas/latex/p/365733/ananas/latex/p/365734/ananas/latex/p/365735
________,________,________,________. /ananas/latex/p/365732/ananas/latex/p/365733/ananas/latex/p/365734/ananas/latex/p/365735
若 ,则P(1<X<3)= P(2<X<4)/ananas/latex/p/436381
若 ,则P(1<X<3)= P(2<X<4)/ananas/latex/p/436381