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Thanks a lot. That worked!
César, You are correct. It seems to be missing in the documentation. I will report the oversight and link this thread. It should be added to the documentation for ToString[], CForm[], and FortranForm[]. I'm glad it helped. I use this...
Thank you everybody for your help.
Ramon, Your first problem is you should NEVER start your variables with capital letters in Mathematica. You will invariably interfere with the inner workings of Mathematica. For example, "E" and "I" both have special meetings (E is the constant...
ok, i know where the problem is. I used Norm[] to a vector, then derivative of this with the elements of the vector. then derivative of the result with the elements fo the vector again. Conjugation occurs in this process. the problem is solved when ...
[@Frank Kampas][at0] posted [some code][1] years ago that may help you. Regards. [at0]: https://community.wolfram.com/web/fkampas [1]: https://community.wolfram.com/groups/-/m/t/1402471?p_p_auth=YrBa0pXt
The Dot operator is for vector and matrix multiplication. Multiplication is an element by element operation. For example: In[61]:= {a, b, c} . {x, y, z} Out[61]= a x + b y + c z In[62]:= {a, b, c} * {x, y, z} ...
Your NDSolve code seems to work fine. Why do you think there is a problem with the NDSolve solution? I don't understand why you want to implement your own integration when Mathematica already has most techniques built in if you set the Method...
The problem occurs when the values are small, in that case, `Export` as text causes the numbers to be read as `String`. d2 // Map[Head] // DeleteDuplicates (* {Real, String} *) d2 // Select[Head[#] === String &] (*...
There seems to be an inconsistency in Mathematica when rounding a number of type x.5, or x.y5, x.yz5 ... When the last digit before 5 is even: ![enter image description here][1] `NumberForm` rounds upwards. The usual way. `Round` uses...