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a0+a1+a2+…+a11=-2 (1)x2+1)(2x+1)9=a0+a1(x+2)+a2(x+2)2+…+a11(x+2)11 (2)a0,a1,a2,…,a11是首项

a0+a1+a2+…+a11=-2

(1)x2+1)(2x+1)9=a0+a1(x+2)+a2(x+2)2+…+a11(x+2)11

(2)a0,a1,a2,…,a11是首项及公比都是-1的等比数列的前12项

A.条件(1)充分,但条件(2)不充分。

B.条件(2)充分,但条件(1)不充分。

C.条件(1)和(2)单独都不充分,但条件(1)和(2)联合起来充分。

D.条件(1)充分,条件(2)也充分。

E.条件(1)和(2)单独都不充分,条件(1)和条件(2)联合起来也不充分。

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更多“a0+a1+a2+…+a11=-2 (1)x2+1)(2x+…”相关的问题
第1题
设(x2+1)(2x+1)9=a0+a1(x+2)+a2(x+2)2+…+a11(x+2)11,则a0+a1+a2+…+a11的值为()

A.-2

B.-1

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D.2

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第2题
A11 一共有几个尺寸段()

A.1

B.2

C.3

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第3题
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在图6-10所示的双液压缸系统中,两液压缸无杆腔面积为A=A11=A21=100cm2,液压缸1的负载F1=35kN,液压缸2运动时的负载F2=0。溢流阀调整压力py=4MPa,顺序阀调整压力px=3MPa,减压阀调节压力pj=2MPa。不计摩擦力和管路压力损失,在下列三种情况下,确定管路中A、B、C点的压力。

在图6-10所示的双液压缸系统中,两液压缸无杆腔面积为A=A11=A21=100cm2,液压缸1的负

在图6-10所示的双液压缸系统中,两液压缸无杆腔面积为A=A11=A21=100cm2,液压缸1的负

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第4题
等差数列{an}中,如果a1=2,a2=5,那么a11=()

A.28

B.30

C.32

D.34

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第5题
等差数列{an}中, 若 a4+a6+a8+a10+a12=120, 则 a9﹣(1/3)a11的值是()

A.14

B.15

C.16

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第6题
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A、T

B、F

(2) The under1ined wordobstaclesin Paragraph 1 could mean suggestions.

A、T

B、F

(3) Telemachus helped Odysseus to get rid of the men who were chasing after his wife.

A、T

B、F

(4) Penelope fe1t excited when she saw her husband for the first time after he had returnedhome.

A、T

B、F

(5) Odysseus proved to Penelope that he was truly her husband by menti oning some secretsabout their bed.

A、T

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第7题
设有一个10阶的对称矩阵A,采用行优先压缩存储方式,a11为第一个元素,其存储地址为1,每个元素占一个字节空间,则a85的地址为()。

A.13

B.18

C.33

D.40

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第8题
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第9题
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第10题
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