Question

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MANUFACTURING At a certain factory, Output
Q is related to inputs x and y by the equation
y
Q = 2x2 + 3x?y2 + (1 + y)3
If the current levels of input are x = 30 and
y 20, use calculus to estimate the change in
input y that should be made to offset a decrease
of 0.8 unit in input x so that output will be
maintained at its current level.
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微積分