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  1. A desktop fused-deposition modeling (FDM) 3D printer builds a plastic part layer-by-layer from filament. The system includes motion axes, an extruder, a heated bed, sensors, firmware, user interface, …etc. a. Identify the main inputs and outputs (Material, Energy, Signal/information). b. Decompose the system into at least 5-7 functions. c. Draw a Functional Structure Diagram (FSD) showing functions and flows. d. For each function, propose at least one feasible solution element. You may use TRIZ principles to support brainstorming and idea generation.