### Solving systems of nonlinear equations using improved double direction method

#### Abstract

derivative-free method for solving large-scale system of nonlinear equations via double direction approach. The acceleration parameter used in this approach approximated the Jacobian matrix in order to form a derivative-free method by reducing two direction presented in double direction scheme into a single one.

under mild conditions, the proposed method is proved to be globally convergent using derivative-free line search. Numerical results recorded in this paper using a set of large-scale test problems show that the proposed approach is successful for solving large-scale problems.

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