Find the moments of inertia for a wire that lies along 
, 
with density 
.
Definitions:
Short-run Expansion Path
The route a firm takes to increase output by optimizing the combination of inputs used, given at least one fixed input, over a short period.
Variable Input
A production input whose quantity can be changed in the short term to influence output.
Fixed
Related to something that is unchanging, constant, or securely attached and not subject to variation.
SAC Curves
Short-run average cost curves represent how a firm's average costs vary with output in the short term.
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