Modify real part and leaves imaginary part unchangedpresenting a real number as real instead of imaginaryHow to eliminate the zero real part of a purely imaginary number?Solve equations real and imaginary part separatelyDecomposing a complex numbers equation into its real and imaginary partListplot imaginary part of complex numbersContour plot of the imaginary portion of a function given the real part is positiveImaginary part of complex number, nothing works?
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Modify real part and leaves imaginary part unchanged
presenting a real number as real instead of imaginaryHow to eliminate the zero real part of a purely imaginary number?Solve equations real and imaginary part separatelyDecomposing a complex numbers equation into its real and imaginary partListplot imaginary part of complex numbersContour plot of the imaginary portion of a function given the real part is positiveImaginary part of complex number, nothing works?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
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$begingroup$
How can I flip the sign of the real part but not affect the imaginary part of a complex number:
a+bi => -a + bi
Example list:
list = -0.282095 + 0.282095 I, -0.27254 + 0.291336 I,
-0.262018 + 0.300835 I, -0.250437 + 0.310542 I
expected:
0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I
So it's "similar" to conjugate but works on the real not imaginary.
complex
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
$endgroup$
add a comment
|
$begingroup$
How can I flip the sign of the real part but not affect the imaginary part of a complex number:
a+bi => -a + bi
Example list:
list = -0.282095 + 0.282095 I, -0.27254 + 0.291336 I,
-0.262018 + 0.300835 I, -0.250437 + 0.310542 I
expected:
0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I
So it's "similar" to conjugate but works on the real not imaginary.
complex
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
$endgroup$
add a comment
|
$begingroup$
How can I flip the sign of the real part but not affect the imaginary part of a complex number:
a+bi => -a + bi
Example list:
list = -0.282095 + 0.282095 I, -0.27254 + 0.291336 I,
-0.262018 + 0.300835 I, -0.250437 + 0.310542 I
expected:
0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I
So it's "similar" to conjugate but works on the real not imaginary.
complex
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
$endgroup$
How can I flip the sign of the real part but not affect the imaginary part of a complex number:
a+bi => -a + bi
Example list:
list = -0.282095 + 0.282095 I, -0.27254 + 0.291336 I,
-0.262018 + 0.300835 I, -0.250437 + 0.310542 I
expected:
0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I
So it's "similar" to conjugate but works on the real not imaginary.
complex
complex
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
asked Oct 1 at 22:41
leon365leon365
5892 silver badges7 bronze badges
5892 silver badges7 bronze badges
add a comment
|
add a comment
|
3 Answers
3
active
oldest
votes
$begingroup$
-Conjugate[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
$endgroup$
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
add a comment
|
$begingroup$
list /. Complex[x_, y_] :> Complex[-x, y]
0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I,
0.250437 + 0.310542 I, 2, 3 I
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
$endgroup$
1
$begingroup$
This assumes that all entries are trulyComplex[_,_]. But for a list-0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even haveRealhead), this won't work correctly.
$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified toComplex[x_,y_]:>Complex[-x,y], x_:>-x.
$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.1.234+0I, which actually collapses to aReal
$endgroup$
– Ruslan
Oct 3 at 14:23
add a comment
|
$begingroup$
f[z_] = -Re[z] + I Im[z]
f[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
$endgroup$
add a comment
|
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
-Conjugate[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
$endgroup$
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
add a comment
|
$begingroup$
-Conjugate[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
$endgroup$
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
add a comment
|
$begingroup$
-Conjugate[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
$endgroup$
-Conjugate[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I,
0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
answered Oct 1 at 22:48
WReachWReach
57k2 gold badges126 silver badges225 bronze badges
57k2 gold badges126 silver badges225 bronze badges
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
add a comment
|
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
$begingroup$
This is not even a Mathematica but a Math answer. I like it
$endgroup$
– infinitezero
Oct 2 at 12:06
add a comment
|
$begingroup$
list /. Complex[x_, y_] :> Complex[-x, y]
0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I,
0.250437 + 0.310542 I, 2, 3 I
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
$endgroup$
1
$begingroup$
This assumes that all entries are trulyComplex[_,_]. But for a list-0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even haveRealhead), this won't work correctly.
$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified toComplex[x_,y_]:>Complex[-x,y], x_:>-x.
$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.1.234+0I, which actually collapses to aReal
$endgroup$
– Ruslan
Oct 3 at 14:23
add a comment
|
$begingroup$
list /. Complex[x_, y_] :> Complex[-x, y]
0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I,
0.250437 + 0.310542 I, 2, 3 I
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
$endgroup$
1
$begingroup$
This assumes that all entries are trulyComplex[_,_]. But for a list-0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even haveRealhead), this won't work correctly.
$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified toComplex[x_,y_]:>Complex[-x,y], x_:>-x.
$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.1.234+0I, which actually collapses to aReal
$endgroup$
– Ruslan
Oct 3 at 14:23
add a comment
|
$begingroup$
list /. Complex[x_, y_] :> Complex[-x, y]
0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I,
0.250437 + 0.310542 I, 2, 3 I
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
$endgroup$
list /. Complex[x_, y_] :> Complex[-x, y]
0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I,
0.250437 + 0.310542 I, 2, 3 I
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
answered Oct 1 at 22:47
Suba ThomasSuba Thomas
5,08911 silver badges20 bronze badges
5,08911 silver badges20 bronze badges
1
$begingroup$
This assumes that all entries are trulyComplex[_,_]. But for a list-0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even haveRealhead), this won't work correctly.
$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified toComplex[x_,y_]:>Complex[-x,y], x_:>-x.
$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.1.234+0I, which actually collapses to aReal
$endgroup$
– Ruslan
Oct 3 at 14:23
add a comment
|
1
$begingroup$
This assumes that all entries are trulyComplex[_,_]. But for a list-0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even haveRealhead), this won't work correctly.
$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified toComplex[x_,y_]:>Complex[-x,y], x_:>-x.
$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.1.234+0I, which actually collapses to aReal
$endgroup$
– Ruslan
Oct 3 at 14:23
1
1
$begingroup$
This assumes that all entries are truly
Complex[_,_]. But for a list -0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even have Real head), this won't work correctly.$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
This assumes that all entries are truly
Complex[_,_]. But for a list -0.282095 + 0.282095 I, -0.3445, which also contains only complex numbers (although one of them happens to be purely real, and even have Real head), this won't work correctly.$endgroup$
– Ruslan
Oct 3 at 5:20
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified to
Complex[x_,y_]:>Complex[-x,y], x_:>-x.$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Agreed. This solution is for complex numbers of the form a + b i that was asked in the question. To include real numbers it needs to be modified to
Complex[x_,y_]:>Complex[-x,y], x_:>-x.$endgroup$
– Suba Thomas
Oct 3 at 14:21
$begingroup$
Actually this would also break for "complex" number like e.g.
1.234+0I, which actually collapses to a Real$endgroup$
– Ruslan
Oct 3 at 14:23
$begingroup$
Actually this would also break for "complex" number like e.g.
1.234+0I, which actually collapses to a Real$endgroup$
– Ruslan
Oct 3 at 14:23
add a comment
|
$begingroup$
f[z_] = -Re[z] + I Im[z]
f[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
$endgroup$
add a comment
|
$begingroup$
f[z_] = -Re[z] + I Im[z]
f[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
$endgroup$
add a comment
|
$begingroup$
f[z_] = -Re[z] + I Im[z]
f[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
$endgroup$
f[z_] = -Re[z] + I Im[z]
f[list]
(* 0.282095 + 0.282095 I, 0.27254 + 0.291336 I, 0.262018 + 0.300835 I, 0.250437 + 0.310542 I *)
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
answered Oct 2 at 18:26
Michael SeifertMichael Seifert
7,75415 silver badges43 bronze badges
7,75415 silver badges43 bronze badges
add a comment
|
add a comment
|
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