@article{MAKHILLJEAS2017121814824, title = {Hybrid Quasi-Newton and Conjugate Gradient Method for Solving Unconstrained Optimization Problems}, journal = {Journal of Engineering and Applied Sciences}, volume = {12}, number = {18}, pages = {4627-4631}, year = {2017}, issn = {1816-949x}, doi = {jeasci.2017.4627.4631}, url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2017.4627.4631}, author = {Nurul,Nurul,Mustafa,Norhaslinda and}, keywords = {Hybrid quasi-Newton,conjugate gradient,Armijo line search,hybrid methods,optimization,modified}, abstract = {A hybrid of quasi-Newton and conjugate gradient method combines the search direction of the two methods to produce a new algorithm for solving unconstrained optimization functions. In this study, a modified hybrid Quasi-Newton method is presented where a new conjugate gradient coefficient is employed in the search direction. Based on the numerical results, the proposed hybrid method proved to be robust in comparison to the original quasi-Newton method and other hybrid methods.} }