• 2022-06-19
    Part 3 I'd like to speak to...[img=750x559]17e0c3ade1a2f4f.jpg[/img]
  • put you through#wrong extension#connect me back#measuring equipment#in you area#call in#literature#see#diary#convenient#confirm#make sure

    内容

    • 0

      随机变量X的概率密度为‍[img=239x61]1803915d900b3cb.png[/img]则常数c为 A: 2 B: [img=98x52]1803915d9894210.png[/img] C: 1 D: 3 E: 4 F: 1/2 G: 1/3 H: 1/4

    • 1

      随机变量X的概率密度为‍[img=239x61]1802d3e895f944e.png[/img]则常数c为 A: 2 B: [img=98x52]1802d3e89f1fea8.png[/img] C: 1 D: 3 E: 4 F: 1/2 G: 1/3 H: 1/4

    • 2

      随机变量X在区间(-1,2)上均匀分布,F(x)是X的分布函数,则以下结果正确的是 A: F(0.5)=0.5 B: F(1)=2/3 C: F(0)=0 D: F(-0.5)=0.5 E: F(1)=1/3 F: F(1.5)=3/4 G: F(2)=0 H: F(3)=0

    • 3

      设[img=333x93]17de8090bc9876c.png[/img],则f(x)=0的根的个数为________ A: 1 B: 2 C: 3 D: 4

    • 4

      ‎设[img=333x93]18032829544406e.png[/img],则f(x)=0的根的个数为________‎ A: 1 B: 2 C: 3 D: 4