Find the derivative, but do not simplify your answer. 
Definitions:
House Prices
The prices at which individual houses are bought and sold in the real estate market.
Number Of Rooms
Typically refers to the count of rooms in a building or designated space, often used in real estate and accommodation descriptions.
Variation
The differences or changes in data or characteristics within a sample or population.
Increase
A rise in magnitude, quantity, or degree; an upward trend in a numerical value or variable.
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