一非线性电阻其伏安特性为[img=130x27]180310829f4ed0f.png[/img],设[img=120x25]18031082a8790ac.png[/img] ,则[img=143x25]18031082b16dad2.png[/img]
举一反三
- 一非线性电阻其伏安特性为 [img=130x27]180310825178b94.png[/img],设 [img=120x25]1803108259fab03.png[/img] ,则 [img=143x25]1803108263e79e6.png[/img]
- 一非线性电阻其伏安特性为 [img=130x27]180348d0b51c019.png[/img],设 [img=120x25]180348d0be843b0.png[/img] ,则 [img=143x25]180348d0c6b5e14.png[/img]
- 若f(x)+f(-x)=0, 则[img=95x39]17da608af452d96.jpg[/img]. 若f(x)=f(-x), 则 [img=170x38]17da60541207426.jpg[/img]
- 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
- 设正态分布N(0, 4)的分布函数为F(x)，则F’(x) = ( ). A: [img=73x63]1802f2c47707b95.png[/img] B: [img=86x65]1802f2c47feb07a.png[/img] C: [img=75x58]1802f2c4884644b.png[/img] D: [img=87x58]1802f2c48fffbbf.png[/img]