In the video, [img=20x22]1803a31af215721.png[/img] and [img=21x25]1803a31afb0b8f1.png[/img] are independent. ( )
举一反三
- In the video, [img=20x22]17de68f6d067079.png[/img] and [img=21x25]17de6f5f1acb950.png[/img] are independent. ( )
- f(x)在[0,1]上有连续的二阶导数，f(0)=f(1)=0,任意x属于[0,...715af2ac3f81f8.png"]
- 在下列命题中:如果f(x)=[img=28x44]17e0bf9914bb2f1.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=28x44]17e0bf992111a1c.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0;如果f(x)=[img=55x44]17e0bf992d8de0a.png[/img],那么[img=29x29]17e0bf9939482bb.png[/img]f(x)不存在;如果f(x)=[img=87x53]17e0bf99450fa82.png[/img],那么[img=27x29]17e0bf97582597b.png[/img]f(x)=0。其中错误命题的个数是( A: 0 B: 1 C: 2 D: 3
- 设随机变量X的概率密度为f(x)，则f(x)一定满足( ). A: 0≤f(x)≤1 B: [img=183x53]1803b451bb3373a.png[/img] C: [img=133x51]1803b451c807078.png[/img] D: f(+∞)=1
- 克莱姆法则中，第i个未知量的解为（ ）。A.[img=20x22]17de8d74b338899.png[/img]/D ; B.1/[img=20x22]17de8d74c0e465b.png[/img] ; C.D/[img=20x22]17de8d74cfa29f0.png[/img] ; D.[img=20x22]17de8d74dc162af.png[/img]/[img=21x25]17de8d74f8c7619.png[/img]. 未知类型：{'options': ['17de8d74b338899.png/D', '1/[img=20x22]17de8d74c0e465b.png[/img]', 'D/[img=20x22]17de8d74cfa29f0.png[/img]', '17de8d74dc162af.png/[img=21x25]17de8d74f8c7619.png[/img]'], 'type': 102}