如果模型[img=145x23]180338041d4bc29.png[/img]存在序列相关,则
A: [img=115x25]1803380426264f7.png[/img]
B: [img=170x25]180338043299e34.png[/img]
C: [img=115x25]180338043b202ee.png[/img]
D: [img=170x25]1803380446db4a7.png[/img]
A: [img=115x25]1803380426264f7.png[/img]
B: [img=170x25]180338043299e34.png[/img]
C: [img=115x25]180338043b202ee.png[/img]
D: [img=170x25]1803380446db4a7.png[/img]
举一反三
- 设连续型随机变量X的密度函数为f(x),分布函数为F(x),x是任意实数,则下列选项正确的有 A: [img=100x25]1803534472affa3.png[/img] B: [img=115x25]1803534479b23df.png[/img] C: [img=112x25]18035344819c5cf.png[/img] D: [img=88x25]180353448a99fa5.png[/img]
- 求部分和[img=100x63]1802e4d65d3bd2b.png[/img]的计算结果为: A: (65*x)/264 B: (34*x)/346 C: (115*x)/626 D: (115*x)/346
- 求不定积分[img=121x54]17da653839aa6ae.png[/img]; ( ) A: log(x^2 + 3*x + 25/4)/4 + (5*atan(x/2 + 3/4))/4 B: log(x^2 + 3*x + 25/4)/4 C: (5*atan(x/2 + 3/4))/4 D: log(x^2 + 3*x + 25/4)/4 - (5*atan(x/2 + 3/4))/4
- 已知随机变量X的分布函数为[img=136x49]1803b69024c8270.png[/img] ,则X的均值和方差分别为 A: E(X)=2, D(X)=4 B: E(X)=4, D(x)=2 C: [img=162x43]1803b6902cd8bfb.png[/img] D: [img=162x43]1803b69034d9ffd.png[/img]
- 令F(x):x是有理数,G(x):x是实数。将命题“所有的有理数都是实数,但有的有实数不是有理数”符号化为() 未知类型:{'options': ['17e0a83a4157352.jpgx(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)∧G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)∧[img=10x11]17e0a839b915354.jpg[/img]F(x))', ' [img=8x14]17e0a83a4157352.jpg[/img]x(F(x)[img=14x9]17e0a73094b5dcf.jpg[/img]G(x))∧[img=8x14]17e0a83a35505d4.jpg[/img]x(G(x)[img=14x9]17e0a73094b5dcf.jpg[/img][img=10x11]17e0a839b915354.jpg[/img]F(x))'], 'type': 102}