Sales and Advertising Suppose that a kitchen appliance company’s monthly sales and advertising expenses are approximately related by the equation x y − 6 x + 20 y = 0 , where x is thousands of dollars spent on advertising and y is thousands of dishwashers sold. Currently, the company is spending 10 thousand dollars on advertising and is selling 2 thousand dishwashers each month. If the company plans to increase monthly advertising expenditure at the rate of $ 1.5 thousands per month, how fast will sales rise? Use implicit differentiation to answer the question.
Sales and Advertising Suppose that a kitchen appliance company’s monthly sales and advertising expenses are approximately related by the equation x y − 6 x + 20 y = 0 , where x is thousands of dollars spent on advertising and y is thousands of dishwashers sold. Currently, the company is spending 10 thousand dollars on advertising and is selling 2 thousand dishwashers each month. If the company plans to increase monthly advertising expenditure at the rate of $ 1.5 thousands per month, how fast will sales rise? Use implicit differentiation to answer the question.
Solution Summary: The author explains how a kitchen appliance company's monthly sales and advertising expenses are approximately related by the equation xy-6x+20y=0.
Sales and Advertising Suppose that a kitchen appliance company’s monthly sales and advertising expenses are approximately related by the equation
x
y
−
6
x
+
20
y
=
0
, where
x
is thousands of dollars spent on advertising and
y
is thousands of dishwashers sold. Currently, the company is spending
10
thousand dollars on advertising and is selling
2
thousand dishwashers each month. If the company plans to increase monthly advertising expenditure at the rate of
$
1.5
thousands per month, how fast will sales rise? Use implicit differentiation to answer the question.
With integration, one of the major concepts of calculus. Differentiation is the derivative or rate of change of a function with respect to the independent variable.
For the following function f and real number a,
a. find the slope of the tangent line mtan
=
f' (a), and
b. find the equation of the tangent line to f at x = a.
f(x)=
2
=
a = 2
x2
a. Slope:
b. Equation of tangent line: y
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