The singularity tag has no wiki summary.
3
votes
2answers
137 views
How to remove a singularity with WhenEvent
Bellow I have a differential equation which hits a singularity at low values of t. What I want to do is somehow utilize the WhenEvent command in order to replace ...
3
votes
0answers
115 views
Principal Value Integration with NIntegrate [closed]
While trying to integrate numerically a function involving singularity (triple pole) I encounter some strange behaviour of Mathematica (I'm using Method -> "PrincipalValue"). Maybe someone can explain ...
4
votes
2answers
163 views
What can I do to eliminate the error FindFit::nrjnum:?
I am testing the "Power Law with finite-time singularity" hypothesis for world population growth for a project.
The data I'm using (same behaviour should also be exhibited by the stock market, thats ...
2
votes
1answer
142 views
Singular integral: NIntegrate fails to converge
I need to calculate the following singular integral:
NIntegrate[Log[1 + y^2]/Cos[Pi y], {y, 0, 1}]
However, it is failing to converge. I have tried to specify ...
1
vote
1answer
313 views
How to find local minima of a multivariate function with singularity?
I am working on a logistic regression problem which requires minimizing a cost function J[{theta0, theta1, theta2}, X, y] to find the optimal value for fitting ...
