已知X的密度函数[img=187x61]1803b692c082735.png[/img],则[img=35x25]1803b692c837a9c.png[/img]可取
A: [img=47x25]1803b692d020ce6.png[/img]
B: [img=35x25]1803b692d7a11fe.png[/img]
C: [img=49x25]1803b692df4c5f3.png[/img]
D: [img=49x25]1803b692e716e67.png[/img]
A: [img=47x25]1803b692d020ce6.png[/img]
B: [img=35x25]1803b692d7a11fe.png[/img]
C: [img=49x25]1803b692df4c5f3.png[/img]
D: [img=49x25]1803b692e716e67.png[/img]
举一反三
- 已知X的密度函数[img=187x61]17de949896b8ba7.png[/img],则[img=35x25]17de9498a556907.png[/img]可取 未知类型:{'options': ['', '', '', ''], 'type': 102}
- 下列函数中为同一个函数的是() 未知类型:{'options': ['f(x)=x,g(x)=[img=25x39]17e43f7e294a229.png[/img]', ' f(x)=x,g(x)=[img=39x24]17e43f7e31cdea3.jpg[/img]', ' f(x)=x,g(x)=[img=35x25]17e43f7e3c419e9.png[/img]', ' f(x)=|x|,g(x)=[img=35x25]17e43f7e3c419e9.png[/img]'], 'type': 102}
- 设F(x)是f(x)的一个原函数,C为常数,则( )也是f(x)的一个原函数 A: [img=63x25]1803db37c42f01b.png[/img] B: [img=49x25]1803db37cd03f1f.png[/img] C: [img=49x25]1803db37d5fbb42.png[/img] D: [img=63x25]1803db37dec46a6.png[/img]
- 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
- 随机变量 X 服从均匀分布[img=296x96]17de89393460b92.png[/img]则D(X)=( ). A: 4.5 B: 25/12 C: 1/5 D: 1