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สัญลักษณ์ซิกม่า

Authored by 4-ภานรินทร์ ดวงประสาท

Mathematics

11th Grade - Professional Development

Used 109+ times

สัญลักษณ์ซิกม่า
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่าของ

 i=1102\sum_{i=1}^{10}2  

20

25

30

15

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

กำหนดให้
 x1=1  x2=3  x3=4  x4=7  x5=0x_1=1\ \ x_2=3\ \ x_3=4\ \ x_4=7\ \ x_5=0  

จงหาค่าของ

 i=15(xi2)3\sum_{i=1}^5\left(x_i-2\right)^3  

 (12)3+(32)3+(42)3+(72)3+(02)3(1-2)^3+(3-2)^3+(4-2)^3+(7-2)^3+(0-2)^3  

20

81

 (12)+(32)+(42)+(72)+(02)(1-2)+(3-2)+(4-2)+(7-2)+(0-2)  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 i=165\sum_{i=1}^65  

35

15

30

20

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt


 3x1+3x2+3x3+...3x_1+3x_2+3x_3+...เขียนแทนด้วย  

 i=13xi\sum_{i=1}^{\infty}3x_i  

 i=202xi\sum_{i=2}^02x_i  

 i=013xi\sum_{i=0}^13x_i  

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 x12+x22+x32+...+xn2x_1^2+x_2^2+x_3^2+...+x_n^2 เขียนแทนด้วย

 i=1nxi\sum_{i=1}^nxi  

 i=1xi\sum_{i=1}^{\infty}x_i^{ }  

 i=010x2\sum_{i=0}^{10}x_{ }^2  

 i=1nxi2\sum_{i=1}^nx_i^2  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

จงหาค่า i=154i\sum_{i=1}^54\cdot i  

90

60

30

75

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 i=13xiจงหาค่า\sum_{i=1}^3x_i 

 กำหนดให้ x1=5, x2=7, x3=9x_1=5,\ x_2=7,\ x_3=9  

22

25

21

19

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