4-1等差數列測驗一

4-1等差數列測驗一

10th Grade

13 Qs

quiz-placeholder

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4-1等差數列測驗一

4-1等差數列測驗一

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

Created by

許逸菁 許逸菁

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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

  若數列 <an>=<2+3n><a_n>=<2+3n> ,則第5項為?

17

21

13

25

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

若一等差數列首項為4,公差為2,則第10項為?

18

20

22

24

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

已知一等差數列 <an><a_n>  中, a3=2,a8=17a_3=-2,a_8=-17  ,試求:公差?

-3

3

-5

1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

等差數列7, 3,-1 , , …的公差為

2

4

-2

-4

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

若-1,a ,b ,c , 19為一等差數列,則b=?

4

9

13

-1

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

設一等差數列前n項的和為 Sn=n22nS_n=n^2-2n  ,試求此數列的第4項。

3

5

8

2

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

在10與-26之間插入8項,使其成等差數列,試求:公差

-4

2

-3

5

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