# Libraries for Regression and Numerical Problems in Fortran 90

**URL:** <https://fortran-lang.discourse.group/t/libraries-for-regression-and-numerical-problems-in-fortran-90/7515>\
**Category:** Help\
**Created:** [March 1, 2024, 6:19pm UTC](https://fortran-lang.discourse.group/t/libraries-for-regression-and-numerical-problems-in-fortran-90/7515 "2024-03-01T18:19:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![uhamid](https://avatars.discourse-cdn.com/v4/letter/u/2bfe46/32.png) [@uhamid](https://fortran-lang.discourse.group/u/uhamid)\
**Post date:** [March 1, 2024, 6:19pm UTC](https://fortran-lang.discourse.group/t/libraries-for-regression-and-numerical-problems-in-fortran-90/7515/1 "2024-03-01T18:19:36Z")

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I am new to Fortran and wondering if there are built-in libraries that I can use to solve linear, nonlinear, ODE, etc. equations using Fortran 90 similar to MATLAB and Python. I noticed that I have to write separate subroutines and functions for the Jacobian, and Newton methods, etc. to solve the equations. I have the same question on the regression of parameters from a particular equation using the experimental data. Please share your valuable thoughts.  
Best,