Solving large scale unconstrained optimization problems with an eｨcient conjugate gradient class Sanaz Bojari Hamedan University of Technology Mahmoud Paripour (  paripour@hut.ac.ir ) Hamedan University of Technology Research Article Keywords: Optimization, Large-scale problems, Conjugate gradient method, weak-Wolfe-Powell line search technique Posted Date: February 16th, 2023 DOI: https://doi.org/10.21203/rs.3.rs-2563786/v1 License:   This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Additional Declarations: No competing interests reported.