Solving a second order nonlinear B V P involving a discontinuous coefficient

[Calin Gheorghiu]

Dear ALL,

  I have correctly solved a genuinely nonlinear B V P but changing a parameter inside the differential equation, I get:  Error using ultraS.multmat 

Unrecognised 2nd argument.  

Can someone suggest the best way to fix this error?

Thanks and regards,

Calin

[Nick Hale]

Dear Calin

Please provide a minimal reproducable example so that we might be able to help.

Best regards

Nick