In computer-aided design (CAD), what are the main functions served by the computer for a designer during the engineering workflow?

Introduction / Context:
Computer-aided design (CAD) environments integrate geometry creation, constraint management, simulation, and documentation. The question evaluates whether you recognize the multi-faceted role of computers in augmenting a designer's capabilities throughout the engineering lifecycle.

Given Data / Assumptions:

• Designers juggle complex shape definitions, tolerances, and assemblies.
• Analysis and iteration demand quick feedback loops.
• Automation of repetitive tasks reduces time-to-market and human error.

Concept / Approach:
Assess how CAD tools act as cognitive and computational amplifiers. They store vast model histories, perform calculations and simulations, and automate routine operations (parametric updates, BOM generation, drawing creation).

Step-by-Step Solution:

Verification / Alternative check:
Modern CAD platforms demonstrate these benefits: parametric modeling records design intent; simulation add-ins enhance analysis; and automated drafting reduces repetitive work, confirming the combined role.

Why Other Options Are Wrong:

• Single-purpose options (memory only, analysis only, routine relief only) each capture a fragment, not the whole.
• None of the above: incorrect because CAD indeed delivers all three functions.

Common Pitfalls:
Assuming CAD is only for drawing, ignoring its role in constraints, parametrics, and integration with downstream manufacturing systems.

Final Answer:
All of the above