This feature needs to be added to the systems development environment to conduct a performance simulation because it enables users to solve mathematical equations and models that represent system performance. A numerical solver is a software tool that can perform numerical analysis and computation on a given problem or model. A numerical solver can help users to evaluate system performance by solving equations that describe system behavior, properties, constraints, etc. A numerical solver can also help users to optimize system performance by finding optimal solutions or trade-offs for a given problem or model. References: https://www.omg.org/ocsmp/ocsmp-adv-exam.htm https://sysml.org/tutorials/sysml-diagram-tutorial/