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seen Jul 16 at 19:36

Aug
25
awarded  Popular Question
Jun
27
accepted Why doesn't Roots work on a certain quartic polynomial equation?
Jun
26
comment Why doesn't Roots work on a certain quartic polynomial equation?
Thanks for your efforts. (1) When I set the values to those special points and evaluated "roots" on it the system hung up. Did it happen for you too? (2) And aren't you also seeing that those last 2 of your roots are not a solution of the equation?
Jun
26
asked Why doesn't Roots work on a certain quartic polynomial equation?
Jun
24
comment How to power-series expand determinants?
@Nasser I want a general expression for the coefficients of $x$ in $\sqrt{det (g)}$ in terms of the matrices $g_i$ and $h_d$. I want to do this for arbitrary matrices $g_i$ and $h_d$
Jun
24
revised How to power-series expand determinants?
added 1 character in body
Jun
24
asked How to power-series expand determinants?
May
11
comment About doing an sum
@J.W.Perry [a] is the floor function and {a} is the fractional part of a. And the comment has the typo - the correct summand is in the question.
May
11
revised A power series expansion
added 10 characters in body
May
11
comment A power series expansion
@Artes Its your choice if you would want to help - in my question I have now reported the "Series" command that I used - in case this is what was bothering you.
May
11
revised A power series expansion
added 1080 characters in body
May
10
comment A power series expansion
@Artes I am not sure what you are referring to! I got those exprepressions by doing the "Series" command on my $f$. Thats it and thats all. I want to understand why option 2 and 3 are giving so different answers when they are exactly the same things.
May
10
comment About doing an sum
@SjoerdC.deVries I am a noob enough to not know how to put in the conditionals on nu and nd. I just this plain thing, Assuming [ n1 [Element] Integers && n2 [Element] Integers && n1 < n2 && a > 0 && n2 < a && n1 < 0, Sum [ (1 + 2 n) Log [ a^2 - ( n + (1/2 )^2) ] , {n, n1, n2}]] // FullSimplify
May
10
comment A power series expansion
@Artes "i" is the usual imaginary unit $\sqrt{-1}$. $\epsilon$ and $\delta$ are real numbers. There is nothing much of a Mathematica code here - all I have done is a series expansion in $\epsilon$ and $\delta$ of $f(z)$ in the 3 cases and I have written down what the respective answers are.
May
10
asked A power series expansion
May
10
asked About doing an sum
Apr
21
comment About how Mathematica understands the branchcuts of the complex logarithm [Part 3]
@MichaelE2 Thanks. Can you kindly attach the code and the graph that you are seeing?
Apr
21
revised About how Mathematica understands the branchcuts of the complex logarithm [Part 3]
added 299 characters in body
Apr
21
revised About how Mathematica understands the branchcuts of the complex logarithm [Part 3]
deleted 1 character in body
Apr
21
revised About how Mathematica understands the branchcuts of the complex logarithm [Part 3]
added 6 characters in body