https://ijss.etunas.com/index.php/ijss <p>International Journal of Smart Systems with eISSN: 2986-5263 is a peer-reviewed journal as a media for publishing research results that support the development of cities, villages, sectors, and other systems. The International Journal of Smart Systems is published by Etunas Suskes Sistem and is published every three months. This journal is expected to be a forum for the publication of research results from practitioners, academics, and related interested parties.</p> <p><br />The scope of the system discussed is attached but not limited;</p> <p>SmartSystem<br />System engineering<br />Artificial Intelligence (AI) Technology and Machine Learning<br />Internet of Things<br />Big data<br />Computer Vision<br />Natural Language Processing<br />Smart city security and convenience systems and components<br />Smart infrastructure systems and components<br />Smart health systems and components<br />Smart Education systems and components<br />Robots process automation.</p> Etunas en-US International Journal of Smart Systems 2986-5263 https://ijss.etunas.com/index.php/ijss/article/view/61 <p>Investment optimization is one of the important topics in the world of finance that aims to maximize profits with minimal risk. Mathematical approaches, particularly through the solution of nonlinear equations, have become an effective method of aiding investment decision-making. This article discusses the development of an investment optimization model that uses nonlinear equation solving techniques to determine optimal asset allocation. In this study, a nonlinear equation is used to describe the relationship between various investment variables, such as profit level, risk, and asset allocation. Using this approach, investors can find optimal solutions that meet their investment goals, whether in conservative, moderate, or aggressive scenarios. The methodology used involves historical data analysis, mathematical model formulation, and the application of numerical algorithms to solve the nonlinear equations. The results show that the solution of nonlinear equations is able to provide a more precise solution than traditional methods, such as linear programming or simple heuristic. This approach not only improves accuracy in determining the optimal portfolio, but also provides flexibility in dealing with dynamic market conditions. The proposed model allows sensitivity analysis to variable changes, allowing investors to make more informative and adaptive decisions. Investment optimization with the solution of nonlinear equations is a significant innovation in the field of finance, which not only supports investment efficiency but also opens up opportunities for the development of more complex investment models. This article is expected to be a reference for academics and practitioners in applying a mathematical approach for optimal portfolio management.&nbsp;</p> Aida Dwi Camilla Shintya Sukma Febiyanti Rika Aprilia Copyright (c) 2025 International Journal of Smart Systems 2023-11-30 2023-11-30 1 4 152 163 10.63876/ijss.v1i4.61