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Sep
13
comment Improving working precision of LegendreP[n,x]?
I have marked this as "already has an answer" -- please see the link inserted at the top of your post. Please also read: (55292) and the second part of (3153)
Sep
13
awarded  Nice Answer
Sep
13
answered Mathematica isn't sure whether a sum of two positives is positive or not
Sep
13
comment Join decimal part
I am not the one who down-voted, but I see why: this does not work. Look at the FullForm -- you have Dot in the result, not a Real number.
Sep
13
answered Join decimal part
Sep
13
comment How to draw quantum circuit with mathematica?
Please provide the input expression (cell expression) that does not work.
Sep
13
comment Speed of ConvexHullMesh
@Igor Oliver's answer might change your mind about that.
Sep
12
revised Improving convergence in a numerical integration (Version 5.2)
edited tags
Sep
12
revised Speed of ConvexHullMesh
edited tags
Sep
12
revised Speed of ConvexHullMesh
added 350 characters in body
Sep
12
comment Column Operation - Subtract part of nested list from part of another nested list
@bjorn I always appreciate people searching before posting but I also know that finding existing Q&A's can be quite difficult. I've spent 15-20 minutes looking for a single one without result before. This question will remain for a time; it may or may not be deleted some months from now. I am not sure how many people would find this question given its current title, but that may be only my own bias speaking. (It seems like a column operation to me so I would phrase it as such but that is merely an opinion.)
Sep
12
comment Column Operation - Subtract part of nested list from part of another nested list
@RunnyKine I guess this really should be closed so I'll convert my answer to CW and do it.
Sep
12
revised Column Operation - Subtract part of nested list from part of another nested list
added 194 characters in body
Sep
12
answered Column Operation - Subtract part of nested list from part of another nested list
Sep
12
comment Concatenating strings, unevaluated expressions and evaluated expressions/values
It is worth noting that NumberMarks are displayed with this method. (e.g. "1.5`") Using NumberMarks -> False does not seem to change this.
Sep
12
comment Trouble to assign solution of differential equation to a function
So why not use a shorter example, e.g. sol = NDSolve[{x'[t] == -y[t] - x[t]^2, y'[t] == 2 x[t] - y[t]^3, x[0] == y[0] == 1}, {x, y}, {t, 20}] (from the documentation) unless it lacks a certain property of your actual code?
Sep
12
comment Speed of ConvexHullMesh
@Mark I'll wait to see if Igor can demonstrate a case with different apparent complexity. p.s. I voted for your answer of course.
Sep
12
comment Speed of ConvexHullMesh
@Igor Please see: What are the use cases for different scoping constructs? -- With, Block, and Module all have the same syntax but work in very different ways. In this case the value of prept does not need to be changed therefore With is a better choice.
Sep
12
comment Speed of ConvexHullMesh
@Igor By the way I used With here because for the time being Module has problems: (58375). I don't know if it would have affected the results but I thought it best to eliminate that factor.
Sep
12
comment Speed of ConvexHullMesh
@Igor I first learned about it here: (54865)