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3h
reviewed Approve When NSolve fails due to a differential situation?
3h
revised Simplify large sum of fractions to shortest representation
added 1 character in body
3h
answered Simplify large sum of fractions to shortest representation
1d
answered how to cancel arbitrary term in fractional formula
May
19
comment Disassambling a boundary mesh into pieces and building it back again fails. Why?
@ user21 It is interesting. How it is to be applied? My trial bm["ElementIncidents"] returns the error message: "ElementMesh::nomthd: "There is no method \!(\"ElementIncidents\") for ElementMesh objects".
May
18
awarded  Popular Question
May
18
answered Plotting the solution of a cubic equation against a coefficient in the equation
May
18
comment Defining a function that completes the square given a quadratic polynomial expression
There is such a function in the "Presentations" package of David Park home.comcast.net/~djmpark/index.html
May
18
comment Disassambling a boundary mesh into pieces and building it back again fails. Why?
Thank you, that's great.
May
18
comment Disassambling a boundary mesh into pieces and building it back again fails. Why?
Thank you, indeed. By the way, do you know, if it is possible to get the list of incidents just from the boundary mesh instead to creating it manually?
May
18
accepted Disassambling a boundary mesh into pieces and building it back again fails. Why?
May
18
asked Disassambling a boundary mesh into pieces and building it back again fails. Why?
May
18
comment Choosing FEM element type and mesh refinement
Could you give a hint, of where do you need the quad and where the triangle mesh? Do you need the mesh refined everywhere, of you want it to be refined locally? If locally, where?
May
13
comment Solving and plotting a non-linear and polynomial equations of degree 3 and higher
You might succeed with a numerical approach, say, with FindRoot. But you need first to fix all syntatic errors. They are much too many to point out each.
May
13
comment Solving and plotting a non-linear and polynomial equations of degree 3 and higher
There are numerous syntax errors. After that, b seems to be Real, is not it? If yes, is not the equation of degree 3, but the transcendental one. As a rule it then cannot be solved by Solve .
May
12
answered Plotting a function based of a complicated integral
May
8
comment ImageSize in Export
@ user21382 Why you do not formulate this as a regular answer? I find your comment contains an information that might be of a general interest.
May
8
answered Conjugate of I \[Phi]
May
7
comment Unevaluated form of an expresion
Try this ReplacePart[ ReplacePart[ HoldForm[s1 + s2], {1, 1} -> (s1 // MatrixForm)], {1, 2} -> (s2 // MatrixForm)]
May
7
comment How can I obtain an asymptotic integral expansion at infinity?
@Daniel Lichtblau I did not know in advance, but just tried, and was lucky to fast find a reasonable form.