# ODE-BVP's with Unknown Parameter

**URL:** <https://discourse.julialang.org/t/ode-bvps-with-unknown-parameter/28873>\
**Category:** Numerics\
**Tags:** diffeq\
**Created:** [September 18, 2019, 12:47am UTC](https://discourse.julialang.org/t/ode-bvps-with-unknown-parameter/28873 "2019-09-18T00:47:04Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![psillano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/psillano/32/211177_2.png) [@psillano](https://discourse.julialang.org/u/psillano)\
**Post date:** [August 12, 2024, 9:50am UTC](https://discourse.julialang.org/t/ode-bvps-with-unknown-parameter/28873/10 "2024-08-12T09:50:59Z")

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> [@ChrisRackauckas](#):
>
> NonlinearLeastSquaresProblem

Yes, but I get a Rank deficiency matrix error! I opened a new post explaining a bit better my problem: [here](https://discourse.julialang.org/t/bvp-shooting-method-with-free-parameters/117955/3)

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