设函数[img=71x25]180358a93b108e5.png[/img]由方程[img=101x21]180358a943d7c25.png[/img]所确定，则[img=73x27]180358a94cb9b18.png[/img]（ ）.
A: [img=52x23]180358a9550a516.png[/img]
B: [img=52x23]180358a95d4f1c4.png[/img]
C: [img=60x23]180358a965814de.png[/img]
D: [img=66x23]180358a96e559fa.png[/img]
A: [img=52x23]180358a9550a516.png[/img]
B: [img=52x23]180358a95d4f1c4.png[/img]
C: [img=60x23]180358a965814de.png[/img]
D: [img=66x23]180358a96e559fa.png[/img]
举一反三
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]
- Which of the following propositions is false,set A = {x,x is an integer and [img=60x23]1803a1c503ffa04.png[/img]} ? ( ) A: [img=113x25]1803a1c50cc3162.png[/img] B: [img=139x25]1803a1c514e60ea.png[/img] C: [img=51x22]1803a1c51dd52ef.png[/img] D: {x|x is an integer and |x| <4} [img=33x22]1803a1c525cf1bd.png[/img]
- 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]
- 设X与Y独立同分布，X的分布函数为F(x)，则Z=min(X,Y)的分布函数G(x)为 A: [img=71x25]1803710a065c458.png[/img] B: [img=46x27]1803710a0e12674.png[/img] C: [img=184x25]1803710a16d9f05.png[/img] D: [img=115x27]1803710a1e9da70.png[/img]
- 设X与Y独立同分布，X的分布函数为F(x)，则Z=max(X,Y)的分布函数G(x)为 A: [img=71x25]1803e18f2ebf33c.png[/img] B: [img=46x27]1803e18f36d2d96.png[/img] C: [img=184x25]1803e18f3f044e9.png[/img] D: [img=115x27]1803e18f481435a.png[/img]