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RSS Feed for Wolfram Community showing any discussions in tag Algebra sorted by activeHow to solve this difficult nonlinear equation involving InverseErf?
https://community.wolfram.com/groups/-/m/t/3022388
Hello,
I have a difficulty with solving the following nonlinear equation involving InverseErf[] using FindRoot:
FindRoot[Sqrt[p*r]/InverseErf[(2/Sqrt[π])*Sqrt[p]]==1,{r,1},WorkingPrecision->50,PrecisionGoal->16]
The problem is that when the argument of InverseErf[] approaches unity, the value of the
function tends to infinity, but I need to obtain accurate values of "r" just close to this limit of the argument of InverseErf[]. Unfortunately, it seems it is not possible to have the parameter "p" greater than about p=78/100, which is still too small for my needs. The function InverseErf[] is supposed to
return correct values for any argument between -1 and 1, but apparently it fails already when
p=79/100. Is there any way to overcome this difficulty?
Leslaw.Leslaw Bieniasz2023-09-27T17:23:34ZSolve a multi-variable equation for one variable
https://community.wolfram.com/groups/-/m/t/3023484
I want to plug this into Mathematica. Please help
ln(x) − ln(y) = b − 2 ln(y) + a x Solve for y; assume x>0.
Thank youZegna Picano2023-09-29T00:34:05Z