# Packages for Optimization

**URL:** <https://discourse.julialang.org/t/packages-for-optimization/50926>\
**Category:** General Usage\
**Tags:** question, package, jump, optimization\
**Created:** [November 29, 2020, 4:03am UTC](https://discourse.julialang.org/t/packages-for-optimization/50926 "2020-11-29T04:03:15Z")\
**Posts on this page:** 3\
**Page:** 2

<div class="post-metadata">

**Author:** ![brett\_knoss](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/brett_knoss/32/13050_2.png) [@brett\_knoss](https://discourse.julialang.org/u/brett_knoss)\
**Post date:** [November 29, 2020, 8:20pm UTC](https://discourse.julialang.org/t/packages-for-optimization/50926/21 "2020-11-29T20:20:54Z")

</div>

Do I need to worry about warnings for malformed packages?

```julia
 Resolving package versions...
┌ Warning: malformed Pkg server value
│ server = "https://C:\\Users\\Brett\\AppData\\Local\\Programs\\Julia 1.5.3\\bin\\julia.exe"
└ @ Pkg.PlatformEngines C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\PlatformEngines.jl:605
┌ Warning: malformed Pkg server value
│ server = "https://C:\\Users\\Brett\\AppData\\Local\\Programs\\Julia 1.5.3\\bin\\julia.exe"
└ @ Pkg.PlatformEngines C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.5\Pkg\src\PlatformEngines.jl:605
  Installed GalacticOptim ─ v0.4.2

```

---

<div class="post-metadata">

**Author:** ![brett\_knoss](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/brett_knoss/32/13050_2.png) [@brett\_knoss](https://discourse.julialang.org/u/brett_knoss)\
**Post date:** [November 29, 2020, 8:54pm UTC](https://discourse.julialang.org/t/packages-for-optimization/50926/22 "2020-11-29T20:54:43Z")

</div>

@ChrisRackauckas  
@stillyslalom

HaZZa! It works, I have version version 4.0.6, and:

```julia
f(x)=x^2/x
f(5)
5.0
let ex = Differential(x)(f(x))
           func_ex = build_function(expand_derivatives(ex), x)
           @eval ∂tk(x)= ($func_ex)(x)
       end
∂tk(x)
1

```

GalacticOptim.jl loads and works as well! I’ll play with it and go over calculus.

---

<div class="post-metadata">

**Author:** ![brett\_knoss](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/brett_knoss/32/13050_2.png) [@brett\_knoss](https://discourse.julialang.org/u/brett_knoss)\
**Post date:** [December 1, 2020, 1:10am UTC](https://discourse.julialang.org/t/packages-for-optimization/50926/23 "2020-12-01T01:10:51Z")

</div>

Can Nonlinear solve or NL solve be used for inequalities?  
ie.

```julia
f(x)=(x^2)-4
solve(f(x)>0)

```

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