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45m
revised Inverting a Spline-Function (Bezier or BSpline)
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5h
comment How can i get the solution of complicated equation?
You can try FindRoot; if you post actual code people will be more willing to help though.
2d
comment Plot 3D set (or a domain of three-variable function)
Very generically, there is a RegioPlot3D function and you might be better off with a different parametrization (like polar) of your variables.
2d
comment Forecast Future Stock Prices - Brownian Motion
You could have a look at the docs.
2d
answered Filling and Shading an Harmonic Curve
2d
revised Filling and Shading an Harmonic Curve
deleted 78 characters in body
2d
comment Faster way to perform SameQ[Reduce[…], Reduce[…]]
I tried TautologyQ[Equivalent[p1, p2], {a, b, c, d, e, f, g, h}] but it's not working and don't know why.
May
20
revised How to run an external program in parallel with a Mathematica package?
deleted 1 characters in body
May
20
reviewed Approve suggested edit on Problem with the Plot of Functions and PlotLegends
May
20
comment substitution rules excluding subscripted variables
@Mr.Wizard I agree it's not the most generic solution.
May
20
answered substitution rules excluding subscripted variables
May
20
reviewed Approve suggested edit on from complex function to a series
May
19
reviewed Reject suggested edit on Im trying to find the eigenvectors of an 11*11 matrix but can't get it to recognise my data
May
18
comment Using single replacement rule to convert algebraic expression
Would TrigToExp[Sinh[3 Q] + Sinh[Q]] /. Exp[a_. Q] -> 2 x^a work ?
May
17
comment Find all the integer numbers $a$, $b$, $c$, $d$, $e$, $f$, $k$ to this equation have three integer different solutions?
I think one has to look at a small number of combinations. If r1=a x + b and similar, then this gives the list of {r1, r2, r2} satisfying the equation : rlist = {Reduce[{r1^(1/3) + r2^(1/3) + r3^(1/3) == #, 0 <= r1 <= 10, 0 <= r2 <= 10, 0 <= r3 <= 10}, {r1, r2, r3}, Integers] /. {r_ == rsol_ -> rsol, And -> List, Or -> List}, #} & /@ Range[0, 20]. The last step is to resolve each of {r1, r2, r3} into triplets of integers with Reduce once more.
May
17
comment How do I obtain the correct double limit?
Of course, but you can take the limit b->0 if you want to.
May
17
comment Flat function with repeated sequence
Can you change the Attributes ?
May
17
answered How do I obtain the correct double limit?
May
16
revised Distribution above pointplot
added 13 characters in body
May
16
awarded  Custodian