幂级数[img=169x60]1802d00a85f3e4c.png[/img]的和函数为( ).
A: [img=66x52]1802d00a8f3a839.png[/img]
B: [img=63x46]1802d00a980e664.png[/img]
C: [img=63x46]1802d00aa0af24d.png[/img]
D: [img=63x50]1802d00aa977ba9.png[/img]
A: [img=66x52]1802d00a8f3a839.png[/img]
B: [img=63x46]1802d00a980e664.png[/img]
C: [img=63x46]1802d00aa0af24d.png[/img]
D: [img=63x50]1802d00aa977ba9.png[/img]
举一反三
- 幂级数[img=169x60]1803668bf93491d.png[/img]的和函数为( ). A: [img=66x52]1803668c018fb07.png[/img] B: [img=63x46]1803668c0b0cec2.png[/img] C: [img=63x46]1803668c1409547.png[/img] D: [img=63x50]1803668c1c99270.png[/img]
- 幂级数[img=169x60]1803d6a40008976.png[/img]的和函数为( ). A: [img=66x52]1803d6a40856133.png[/img] B: [img=63x46]1803d6a41148420.png[/img] C: [img=63x46]1803d6a419e551c.png[/img] D: [img=63x50]1803d6a422ccf97.png[/img]
- 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
- X~N(1,1), 密度函数为[img=37x25]18038fe689205b5.png[/img], 分布函数为F(x), 则( ) A: [img=198x25]18038fe690a03ee.png[/img] B: [img=101x25]18038fe69af96aa.png[/img] C: [img=67x25]18038fe6a3b8e5b.png[/img][img=118x25]18038fe6ab93d6f.png[/img] D: F(x)=F(-x)
- 设随机变量X的密度函数为f(x),分布函数为F(x),f(x)关于y轴对称,则有( ) A: [img=140x25]1803da31a560693.png[/img] B: [img=154x25]1803da31adcabd7.png[/img] C: [img=109x25]1803da31b6af422.png[/img] D: [img=149x25]1803da31bffb06d.png[/img]