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Results tagged with Search options questions only user 70

Questions on the analytic and numerical equation solving functions of Mathematica (Solve, Reduce, NSolve, FindRoot, DSolve, RSolve, etc.).

5
votes
1answer
My understanding is that Reduce gives all conditions (using or) where the input is true. Now, $\sqrt{xy} = \sqrt x \sqrt y $, where $x,y$ are real, under the following three conditions/cases $$ \be …
asked Jul 20 by Nasser
8
votes
1answer
In older versions of Mathematica, there was a function called BesselJPrimeZeros used to find the zeros of the derivative of BesselJ function. http://mathworld.wolfram.com/BesselFunctionZeros.html …
asked May 5 '18 by Nasser
8
votes
1answer
Currently, Only way I know to use GroebnerBasis to solve system of polynomials require lots of manual steps. I'd like to know how to automate this process and if Mathematica has commands to help with …
asked Jan 26 '18 by Nasser
6
votes
1answer
Bug introduced in 10.0.0 and fixed in 11.0.0 When trying to solve 8 equations in 8 unknowns, I get SystemException["MemoryAllocationFailure"]. I am not sure if I am doing something wrong, or is thi …
asked Apr 1 '16 by Nasser
5
votes
1answer
Bug introduced in 11.3 and persisting through 12.0.0 In 11.2 DSolve return unevaluated. Assigned WRI case number 4210941 Using 11.3 on Windows 10, this input ClearAll[w, x, y, a, b, lambda, mu]; …
asked Jan 9 by Nasser
8
votes
3answers
Mathematica 11.3. I am not sure if this solution given by Mathematica is correct. But I'd like to ask the experts. eqn = 2*Sqrt[x] y'[x]==Sqrt[1-y[x]]; sol = DSolve[eqn,y,x] (eqn/.sol)//Simplify …
asked Jun 9 '18 by Nasser
2
votes
1answer
Does any one know a trick to make DSolve find solution to this coupled linear first order PDE system: (these are Cauchy-Riemann PDE equations, but with one of them having one of the dependent variable …
asked Jan 11 '18 by Nasser