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5 votes

How many solutions does this system have?

Try ContourPlot and MeshFunctions in order to estimate numerically the number of solutions: ...
Ulrich Neumann's user avatar
4 votes

How many solutions does this system have?

We can try FindRoot as follows ...
Alex Trounev's user avatar
  • 45.4k
4 votes

Singularity or stiff system suspected in ODE that shouldn't have a singularity in the solution range

This ODE also can be solved symbolically. ...
bbgodfrey's user avatar
  • 61.6k
4 votes
Accepted

Singularity or stiff system suspected in ODE that shouldn't have a singularity in the solution range

If we can solve $$ \int_{v_0}^{v_s} {dv \over v} = \int_{p_0}^\infty {dp \over A + Bp + Cp^2 +Dp^3} \,,$$ we will obtain the value $v_s$ at which the IVP $$ {dp \over dv} = {A + Bp + Cp^2 +Dp^3 \over ...
Michael E2's user avatar
  • 237k
3 votes

Singularity or stiff system suspected in ODE that shouldn't have a singularity in the solution range

If you integrate your equation backwards from 1000 you see that it will diverge near 815: ...
Daniel Huber's user avatar
  • 52.7k
3 votes

How many solutions does this system have?

This is a exact and "error/warning-messages-free" method. Firstly, there are roots that can be expressed exactly as ...
azerbajdzan's user avatar
  • 18.9k
3 votes
Accepted

Gillespie (stochastic simulation) algorithm

It is not complete answer since paclet we try to use has some typos in it (maybe it needs just version update). At first step we compute data using GillespieSSA ...
Alex Trounev's user avatar
  • 45.4k
3 votes

I can't get NSolve to work

...
Bob Hanlon's user avatar
  • 159k
2 votes

How to ask Mathematica to compute the given sum of the differences of the numbers of the given two sets?

...
Syed's user avatar
  • 55.4k
2 votes

How to ask Mathematica to compute the given sum of the differences of the numbers of the given two sets?

set1 = {b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11}; set2 = {a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11}; Using Association...
eldo's user avatar
  • 75k
2 votes

Mathematica incorrectly claims an infinite sum doesn't converge

Looks like Mathematica dosen't know how compute this series. Workaround: ...
Mariusz Iwaniuk's user avatar

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