paraphrase this "Rapid Application Development $($RAD$)$ and Joint Application Development $($JAD$)$ are two system development concepts that complement each other:

Rapid Application Development $($RAD$)$:

$$ Focuses on speed and efficiency in developing applications

$$ Emphasizes iterative development, prototyping, and continuous feedback

$$ Uses flexible tools and techniques, like Agile methodologies

$$ Aims to reduce development time and costs

Joint Application Development $($JAD$)$:

$$ Involves active participation from both developers and stakeholders

$$ Focuses on collaboration and communication to ensure mutual understanding

$$ Uses workshops, interviews, and other interactive techniques

$$ Aims to ensure that the developed system meets user needs and expectations

Relationship between RAD and JAD:

$$ RAD provides the framework for rapid development, while JAD ensures that the development process is guided by user needs and feedback

$$ JAD helps in defining requirements, which are then used in the RAD process

$$ RAD's iterative approach allows for continuous refinement based on JAD's collaborative feedback

$$ Together, RAD and JAD enable a user$-$centered, iterative, and efficient system development process"