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Suppose the sale price of a used car can be predicted by a function f(x, y)...

Suppose the sale price of a used car can be predicted by a function f(x, y) where x represents the mileage of the car and y represents the year it was manufactured.

Would you expect fx to be positive or negative? WHY?

Would you expect fy to be positive or negative? WHY?

Math   Calculus   
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