# Bifurcation problem

**URL:** <https://discourse.julialang.org/t/bifurcation-problem/127590>\
**Category:** New to Julia\
**Created:** [April 1, 2025, 11:45am UTC](https://discourse.julialang.org/t/bifurcation-problem/127590 "2025-04-01T11:45:38Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Mkriti\_Marco](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mkriti_marco/32/216070_2.png) [@Mkriti\_Marco](https://discourse.julialang.org/u/Mkriti_Marco)\
**Post date:** [April 1, 2025, 11:45am UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/1 "2025-04-01T11:45:38Z")

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Hi, I have a parameter p = [P1 and P2] and I compute my residual and Jacobian of my problem by varying only the P2 but passing p as the input. In Julia when I try to pass just the P2 Parameter to bifurcation problem which is actually varied while computation of residual and stiffness matrix I encounter an error message which says stopping continuation and the divergence occurs. How can I fix this

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**Author:** ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)\
**Post date:** [April 1, 2025, 1:14pm UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/2 "2025-04-01T13:14:59Z")

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can you post a minimal working example?

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**Author:** ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)\
**Post date:** [April 1, 2025, 2:17pm UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/5 "2025-04-01T14:17:03Z")

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Note that you can use ``` to make the code nicer

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**Author:** ![rveltz](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/rveltz/32/2707_2.png) [@rveltz](https://discourse.julialang.org/u/rveltz)\
**Post date:** [April 1, 2025, 2:18pm UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/6 "2025-04-01T14:18:32Z")

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This is not a minimal working example, I cannot run it.

You should do `@reset opts_br.newton_options.verbose=true` and pass `verbosity = 3` to better investigate the non convergence.

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**Author:** ![Mkriti\_Marco](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mkriti_marco/32/216070_2.png) [@Mkriti\_Marco](https://discourse.julialang.org/u/Mkriti_Marco)\
**Post date:** [April 1, 2025, 2:21pm UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/7 "2025-04-01T14:21:03Z")

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Ahh sorry I misunderstood. I will check it though. Thanks

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<div class="post-metadata">

**Author:** ![Mkriti\_Marco](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mkriti_marco/32/216070_2.png) [@Mkriti\_Marco](https://discourse.julialang.org/u/Mkriti_Marco)\
**Post date:** [April 1, 2025, 2:43pm UTC](https://discourse.julialang.org/t/bifurcation-problem/127590/8 "2025-04-01T14:43:44Z")

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I have another question. How can we call a function F(a,b,c,m,n) from Matlab into Julia which mostly depends on a,c and other input arguments are mostly constants. After calling the function into Julia how can I verify that it works as expected when I provide a and c as inputs in Julia.