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comment Two warning messages in NIntegrate and NDSolve
One step at a time: the second derivative is z''[\[Rho]] or Derivative[2][z][\[Rho]] (which you know already); do not use primes.
Jul
20
awarded  Enlightened
Jul
20
awarded  Nice Answer
Jul
17
awarded  Enlightened
Jul
17
awarded  Nice Answer
Jul
11
answered Use of Ito's lemma in ItosLemma.m (or any other method in Mathematica)
Jul
11
answered Output matrix with common elements
Jul
7
comment LogPlot does not show all points
You can try PlotRange -> {{-.1, 1}, {0, 10^12}} or so.
Jul
6
comment Manipulated surfaces to include Parametric3D plot of concurrent line
You can just do Manipulate[Show[ContourPlot3D[...], Ring1, Ring2]].
Jul
5
awarded  Nice Answer
Jun
26
comment Manipulate code crashes V10.1
Hangs under linux too.
Jun
23
comment Why can't Mathematica DSolve my equation?
Several things: if you know v[t] then this is not a variable in the equation. Also, your equation for s[t] is first order and you're trying to impose two conditions.
Jun
22
comment Why does Mathematica not evaluate the difference recurrence using `RSolve` or `RecurrenceTable`?
From your initial conditions I get a[1, 1]=1; how would I calculate a[1,2] = a[1, 1]+a[0,1] + a[0, 2] ?
Jun
20
awarded  Nice Answer
Jun
20
revised Is it possible that we can use “+” to add two vectors in polar form?
edited title
Jun
20
revised PlotMarker differences in ListPlot between Mathematica 10.0.1 and Mathematica 10.1
added 164 characters in body
Jun
20
comment PlotMarker differences in ListPlot between Mathematica 10.0.1 and Mathematica 10.1
You can look at the FullForm of the plots; the only difference is PointSize[0.009166666666666668]` in version 10.1 and PointSize[0.01388888888888889]` in version 10.0.1. So you can take the plot from 10.1 and just do pl1 /. PointSize[0.009166666666666668] -> PointSize[0.01388888888888889].
Jun
19
awarded  Nice Answer
Jun
17
comment How do I add my own help pages to the in-built Wolfram documentation?
I am able to add documentation for my own functions using the Workbench - no JLink errors.
Jun
14
comment Performing piecewise integration
Commands need to be capitalised.