Find the second derivative 
of the function defined implicitly by the equation. 
Definitions:
Average Variable Costs
The total variable costs (costs that change with production volume) divided by the total output.
Repairs
The process of fixing or restoring something that is broken or damaged to bring it back to a good condition.
Hydraulic Car Smasher
A machine used in scrapyards to crush cars into small, compact pieces using hydraulic power.
Dispose of Cars
The process of discarding or recycling vehicles that are no longer functional or needed.
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