how to write matrix?

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1
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favorite

The following code gives 20 data as output.

enter image description here

How can I make a 5*4 matrix by that data list?

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

2

Check out Table, and don't forget to capitalize Sin and Cos.
â€“Â Chris K
1 hour ago

2

Please post code in code blocks in the future. This is not copyable. I think this will answer all your questions: Why avoid For
â€“Â Szabolcs
1 hour ago

It is edited @Szabolcs
â€“Â a b
42 mins ago

2

Hi a-b, when Szabolcs asks for code, he means text that can be copy-pasted. The only way we can fix problems is if we can reproduce them!
â€“Â bill s
36 mins ago

add a commentÂ |Â

up vote
1
down vote

favorite

The following code gives 20 data as output.

enter image description here

How can I make a 5*4 matrix by that data list?

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

2

Check out Table, and don't forget to capitalize Sin and Cos.
â€“Â Chris K
1 hour ago

2

Please post code in code blocks in the future. This is not copyable. I think this will answer all your questions: Why avoid For
â€“Â Szabolcs
1 hour ago

It is edited @Szabolcs
â€“Â a b
42 mins ago

2

Hi a-b, when Szabolcs asks for code, he means text that can be copy-pasted. The only way we can fix problems is if we can reproduce them!
â€“Â bill s
36 mins ago

add a commentÂ |Â

up vote
1
down vote

favorite

The following code gives 20 data as output.

enter image description here

How can I make a 5*4 matrix by that data list?

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

The following code gives 20 data as output.

enter image description here

How can I make a 5*4 matrix by that data list?

matrix programming

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

edited 43 mins ago

asked 1 hour ago

a b

112

New contributor

asked 1 hour ago

a b

112

asked 1 hour ago

a b

112

New contributor

a b is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

2

Check out Table, and don't forget to capitalize Sin and Cos.
â€“Â Chris K
1 hour ago

2

Please post code in code blocks in the future. This is not copyable. I think this will answer all your questions: Why avoid For
â€“Â Szabolcs
1 hour ago

It is edited @Szabolcs
â€“Â a b
42 mins ago

2

Hi a-b, when Szabolcs asks for code, he means text that can be copy-pasted. The only way we can fix problems is if we can reproduce them!
â€“Â bill s
36 mins ago

add a commentÂ |Â

2

Check out Table, and don't forget to capitalize Sin and Cos.
â€“Â Chris K
1 hour ago

2

Please post code in code blocks in the future. This is not copyable. I think this will answer all your questions: Why avoid For
â€“Â Szabolcs
1 hour ago

It is edited @Szabolcs
â€“Â a b
42 mins ago

2

Hi a-b, when Szabolcs asks for code, he means text that can be copy-pasted. The only way we can fix problems is if we can reproduce them!
â€“Â bill s
36 mins ago

Check out Table, and don't forget to capitalize Sin and Cos.
â€“Â Chris K
1 hour ago

Please post code in code blocks in the future. This is not copyable. I think this will answer all your questions: Why avoid For
â€“Â Szabolcs
1 hour ago

It is edited @Szabolcs
â€“Â a b
42 mins ago

Hi a-b, when Szabolcs asks for code, he means text that can be copy-pasted. The only way we can fix problems is if we can reproduce them!
â€“Â bill s
36 mins ago

add a commentÂ |Â

2 Answers
2

active

oldest

votes

up vote
2
down vote

n = 2;
Table[
 If[OddQ[j],
 Cos[2. Pi i j/(2 n + 1)],
 Sin[2. Pi i j/(2 n + 1)]
 ],
 i, -n, n, j, 1, 2 n
 ]

answered 28 mins ago

Henrik Schumacher

43.8k263129

add a commentÂ |Â

up vote
2
down vote

Here is a starting point without the For loops:

Clear@f; 
f[i_, j_] /; OddQ[j] := c[i, j]; 
f[i_, j_] /; EvenQ[j] := s[i, j]; 

n1 = 2; 
res = Table[f[i, j], i, -n1, n1, j, 1, 2*n1]; 

(* Note MatrixForm is for presentation, not for computations *)
 res // MatrixForm

enter image description here

You can then enter your definition of c and s

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

2

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

add a commentÂ |Â

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

up vote
2
down vote

n = 2;
Table[
 If[OddQ[j],
 Cos[2. Pi i j/(2 n + 1)],
 Sin[2. Pi i j/(2 n + 1)]
 ],
 i, -n, n, j, 1, 2 n
 ]

answered 28 mins ago

Henrik Schumacher

43.8k263129

add a commentÂ |Â

up vote
2
down vote

n = 2;
Table[
 If[OddQ[j],
 Cos[2. Pi i j/(2 n + 1)],
 Sin[2. Pi i j/(2 n + 1)]
 ],
 i, -n, n, j, 1, 2 n
 ]

answered 28 mins ago

Henrik Schumacher

43.8k263129

add a commentÂ |Â

up vote
2
down vote

n = 2;
Table[
 If[OddQ[j],
 Cos[2. Pi i j/(2 n + 1)],
 Sin[2. Pi i j/(2 n + 1)]
 ],
 i, -n, n, j, 1, 2 n
 ]

answered 28 mins ago

Henrik Schumacher

43.8k263129

n = 2;
Table[
 If[OddQ[j],
 Cos[2. Pi i j/(2 n + 1)],
 Sin[2. Pi i j/(2 n + 1)]
 ],
 i, -n, n, j, 1, 2 n
 ]

answered 28 mins ago

Henrik Schumacher

43.8k263129

answered 28 mins ago

Henrik Schumacher

43.8k263129

answered 28 mins ago

Henrik Schumacher

43.8k263129

answered 28 mins ago

Henrik Schumacher

43.8k263129

add a commentÂ |Â

up vote
2
down vote

Here is a starting point without the For loops:

Clear@f; 
f[i_, j_] /; OddQ[j] := c[i, j]; 
f[i_, j_] /; EvenQ[j] := s[i, j]; 

n1 = 2; 
res = Table[f[i, j], i, -n1, n1, j, 1, 2*n1]; 

(* Note MatrixForm is for presentation, not for computations *)
 res // MatrixForm

enter image description here

You can then enter your definition of c and s

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

2

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

add a commentÂ |Â

up vote
2
down vote

Here is a starting point without the For loops:

Clear@f; 
f[i_, j_] /; OddQ[j] := c[i, j]; 
f[i_, j_] /; EvenQ[j] := s[i, j]; 

n1 = 2; 
res = Table[f[i, j], i, -n1, n1, j, 1, 2*n1]; 

(* Note MatrixForm is for presentation, not for computations *)
 res // MatrixForm

enter image description here

You can then enter your definition of c and s

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

2

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

add a commentÂ |Â

up vote
2
down vote

Here is a starting point without the For loops:

Clear@f; 
f[i_, j_] /; OddQ[j] := c[i, j]; 
f[i_, j_] /; EvenQ[j] := s[i, j]; 

n1 = 2; 
res = Table[f[i, j], i, -n1, n1, j, 1, 2*n1]; 

(* Note MatrixForm is for presentation, not for computations *)
 res // MatrixForm

enter image description here

You can then enter your definition of c and s

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

Here is a starting point without the For loops:

Clear@f; 
f[i_, j_] /; OddQ[j] := c[i, j]; 
f[i_, j_] /; EvenQ[j] := s[i, j]; 

n1 = 2; 
res = Table[f[i, j], i, -n1, n1, j, 1, 2*n1]; 

(* Note MatrixForm is for presentation, not for computations *)
 res // MatrixForm

enter image description here

You can then enter your definition of c and s

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

edited 14 mins ago

answered 25 mins ago

FredrikD

8071822

answered 25 mins ago

FredrikD

8071822

answered 25 mins ago

FredrikD

8071822

2

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

add a commentÂ |Â

2

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

Oh please, leave away MatrixForm. It is the cause for so many desperate questions on this forum... (still +1).
â€“Â Henrik Schumacher
17 mins ago

Good point! I added a comment above to separate the calculated result from the presentation.
â€“Â FredrikD
15 mins ago

add a commentÂ |Â

a b is a new contributor. Be nice, and check out our Code of Conduct.

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