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kkurt [141]
3 years ago
6

A company estimates that the revenue (in dollars) from the sale of x doghouses is given by R(x)=14,000ln(0.01x+1). Use the diffe

rential to approximate the change in revenue fro the sale of one more doghouse if 110 doghouses have already been sold.
Business
1 answer:
melamori03 [73]3 years ago
5 0

Answer: The change in revenue for the sale of 1 more doghouse $ 66.67 dollars

Explanation: Differential is a function that can be used to approximate function value with a great degree of accuracy. This is done by the following.

Mathematical definition of derivative: f'(x) = lim f(x+Δx) - f(x)/Δx.

If Δx is very small:

f'(x) . Δx ≅ f(x+Δx) - f(x)

Knowing that Δy ≅ f(x+Δx) - f(x) and the diferential of variable x can be written by dx as the variable y can be dy:

dy = f'(x) dx

which means that the differential dy is approximately equal to the change Δy, if Δx is very small.

For the question, R(x) = y(x) = 14,000ln(0.01x+1)

f'(x) = \frac{d[14,000.ln(0.01x+1)]}{dx}

Using the chain rule, the derivative will be:

f'(x) = 14,000.\frac{0.01}{0.01x+1}

dy = 14,000.\frac{0.01}{0.01x+1}.dx

dx is the change in x. For the question, the change is 1 (1 more doghouse) and x is 110:

dy = 14,000\frac{0.01}{0.01.110+1}.1

dy = \frac{140}{2.1}

dy = 66.67

The change in revenue is $66.67 dollars.

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