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Question: how to do loop with 2 formula

Question:how to do loop with 2 formula

syahirah rahimi 15 Maple
do-loop duplicate-question
May 23 2023
1


there’s few redundant values. I just want the positive values. How it can be done?

> 

restart
> 

NULL
> 

n := [80, 79, 83, 84, 83, 83, 81, 85, 86, 86, 83, 82, 83, 84, 81, 80, 83, 79, 82, 81, 85]

[80, 79, 83, 84, 83, 83, 81, 85, 86, 86, 83, 82, 83, 84, 81, 80, 83, 79, 82, 81, 85]

 (1)
> 

``
> 

nops(n)

21

 (2)
> 

for i from 3 to 17 do f[i] := n[i-2]-3*n[i-1]+3*n[i]; i = i+1; f[i+1] := n[i-2]+4*n[i-1]-6*n[i]+n[i+1] end do

92

  

3 = 4

  

-18

  

82

  

4 = 5

  

-10

  

80

  

5 = 6

  

4

  

84

  

6 = 7

  

-1

  

77

  

7 = 8

  

14

  

95

  

8 = 9

  

-17

  

84

  

9 = 10

  

-9

  

85

  

10 = 11

  

-4

  

77

  

11 = 12

  

14

  

83

  

12 = 13

  

9

  

86

  

13 = 14

  

-3

  

85

  

14 = 15

  

-9

  

74

  

15 = 16

  

13

  

81

  

16 = 17

  

11

  

90

  

17 = 18

  

-18

 (3)
> 

``
> 

NULL


 

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