f(x)的一个原函数是[img=11x43]1803d3634647ea7.png[/img],则[img=95x26]1803d3634ed60f4.png[/img]
A: [img=38x25]1803d36356857de.png[/img]
B: [img=11x43]1803d3635fb8ea3.png[/img]
C: [img=34x43]1803d36368afb24.png[/img]
D: [img=18x43]1803d36370ea149.png[/img]
A: [img=38x25]1803d36356857de.png[/img]
B: [img=11x43]1803d3635fb8ea3.png[/img]
C: [img=34x43]1803d36368afb24.png[/img]
D: [img=18x43]1803d36370ea149.png[/img]
举一反三
- 若函数f(x)的一个原函数为lnx,则一阶导数[img=58x29]180342e8628d597.png[/img] A: [img=11x43]180342e86c7403c.png[/img] B: [img=34x43]180342e875b8c85.png[/img] C: lnx D: xlnx
- 设随机变量X的分布函数为[img=154x43]18038f90e6d68fa.png[/img],[img=120x19]18038f90eeba080.png[/img],则随机变量x的密度函数 f(x)=________。 A: [img=65x47]18038f90f6ba215.png[/img] B: [img=66x47]18038f90ff7c374.png[/img] C: [img=55x44]18038f9107bda41.png[/img] D: [img=11x43]18038f91111f2e4.png[/img]
- 设二维随机变量(X,Y)的联合分布函数为[img=358x53]1803da281631172.png[/img]则常数A=( ) A: [img=11x43]1803da281fe85d5.png[/img] B: [img=18x43]1803da282906c28.png[/img] C: [img=11x43]1803da2832d80a9.png[/img] D: [img=18x43]1803da283b6c3fc.png[/img]
- 设二维随机变量(X,Y)的联合分布函数为[img=358x53]18032790423a039.png[/img]则常数A=( ) A: [img=11x43]180327904bf4721.png[/img] B: [img=18x43]1803279054ab56e.png[/img] C: [img=11x43]180327905d2ccbc.png[/img] D: [img=18x43]1803279065aad8c.png[/img]
- 设二维随机变量(X,Y)的联合分布函数为[img=358x53]1803da28eea1139.png[/img]则常数A=( ) A: [img=11x43]1803da28f803a36.png[/img] B: [img=18x43]1803da2900f5c07.png[/img] C: [img=11x43]1803da290a57734.png[/img] D: [img=18x43]1803da2913fa238.png[/img]