Timeline for Conjugate & Derivative
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 12, 2019 at 6:37 | comment | added | Αλέξανδρος Ζεγγ | @MichaelE2 Great! Thx for your comment! | |
| Jan 11, 2019 at 19:54 | comment | added | Michael E2 | I think the problem with your original way was a misplaced Evaluate. Try myConjugate = # /. {I -> -I, -I -> I} &; h[x_, y_] := Derivative[0, 1][Evaluate[myConjugate[f[#, #2]]/g[#, #2]] &][x, y] | |
| Dec 12, 2018 at 11:27 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 36 characters in body |
| Dec 12, 2018 at 11:14 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 79 characters in body |
| Dec 12, 2018 at 8:59 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 71 characters in body |
| Dec 12, 2018 at 8:54 | history | undeleted | Αλέξανδρος Ζεγγ | ||
| Dec 12, 2018 at 8:44 | history | deleted | Αλέξανδρος Ζεγγ | via Vote | |
| Dec 12, 2018 at 8:33 | comment | added | Αλέξανδρος Ζεγγ | @Chipa-Chipa I mean to obtain the explicit expression of the function, before you put it into its derivative calculation. | |
| Dec 12, 2018 at 8:31 | comment | added | Chipa-Chipa | Do you mean that I should make the replacement only when I define the derivative? | |
| Dec 12, 2018 at 8:27 | comment | added | Αλέξανδρος Ζεγγ | @Chipa-Chipa Then I suggest that you do not use a pure function in the middle of Derivative, but use the explicit form of the function you want to go further. | |
| Dec 12, 2018 at 8:24 | comment | added | Chipa-Chipa | thx. I have already noticed that your first suggested example gives the wrong answer. Will your second example decrease the calculation rate? I have a very large amount of functions and need to do rather complex calculations. Is it possible not to replace all the functions like 'f[x,y][Conjugate]' by 'Evaluate[ComplexExpand[f[x, y][Conjugate]]]'? | |
| Dec 12, 2018 at 8:16 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 349 characters in body |
| Dec 12, 2018 at 8:11 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 349 characters in body |
| Dec 12, 2018 at 7:54 | history | edited | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 | added 184 characters in body |
| Dec 12, 2018 at 7:49 | history | answered | Αλέξανδρος Ζεγγ | CC BY-SA 4.0 |