Exam 13: Section 1: Functions of Several Variables

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Sketch the surface given by the function. Sketch the surface given by the function.

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D

Find and simplify the function Find and simplify the function   at the given value   . at the given value Find and simplify the function   at the given value   . .

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Describe the level curves of the function. Sketch the level curves for the given c-values. Describe the level curves of the function. Sketch the level curves for the given c-values.

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Find and simplify the function Find and simplify the function   at the given value   . at the given value Find and simplify the function   at the given value   . .

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Find and simplify Find and simplify   for the given function   . for the given function Find and simplify   for the given function   . .

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Describe the domain of the function Describe the domain of the function   . .

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According to the Ideal Gas Law, According to the Ideal Gas Law,   , where P is pressure, V is volume, T is temperature (in Kelvins), and k is a constant of proportionality. A tank contains 2000 cubic inches of nitrogen at a pressure of 26 pounds per square inch and a temperature of 600 K. Determine k. , where P is pressure, V is volume, T is temperature (in Kelvins), and k is a constant of proportionality. A tank contains 2000 cubic inches of nitrogen at a pressure of 26 pounds per square inch and a temperature of 600 K. Determine k.

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Find and simplify the function Find and simplify the function   at the given value   . at the given value Find and simplify the function   at the given value   . .

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Describe the domain of the function Describe the domain of the function   . .

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Assume in 2009, an investment of $2400 was made in a bond earning 9% compounded annually. Assume that the buyer pays at rate R and the annual rate of inflation is I. Suppose in the year 2019, the value V of the investment in constant 2009 dollars is Assume in 2009, an investment of $2400 was made in a bond earning 9% compounded annually. Assume that the buyer pays at rate R and the annual rate of inflation is I. Suppose in the year 2019, the value V of the investment in constant 2009 dollars is   . Calculate the function   for   and   . Round your answer to the nearest cent. . Calculate the function Assume in 2009, an investment of $2400 was made in a bond earning 9% compounded annually. Assume that the buyer pays at rate R and the annual rate of inflation is I. Suppose in the year 2019, the value V of the investment in constant 2009 dollars is   . Calculate the function   for   and   . Round your answer to the nearest cent. for Assume in 2009, an investment of $2400 was made in a bond earning 9% compounded annually. Assume that the buyer pays at rate R and the annual rate of inflation is I. Suppose in the year 2019, the value V of the investment in constant 2009 dollars is   . Calculate the function   for   and   . Round your answer to the nearest cent. and Assume in 2009, an investment of $2400 was made in a bond earning 9% compounded annually. Assume that the buyer pays at rate R and the annual rate of inflation is I. Suppose in the year 2019, the value V of the investment in constant 2009 dollars is   . Calculate the function   for   and   . Round your answer to the nearest cent. . Round your answer to the nearest cent.

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Sketch the level curves of the function Sketch the level curves of the function   for the given c-values   . for the given c-values Sketch the level curves of the function   for the given c-values   . .

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Assume a rule that is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length L (in feet). The number of board-feet is Assume a rule that is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length L (in feet). The number of board-feet is   . Find the number of board-feet of lumber in a log 28 inches in diameter and   feet in length. . Find the number of board-feet of lumber in a log 28 inches in diameter and Assume a rule that is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length L (in feet). The number of board-feet is   . Find the number of board-feet of lumber in a log 28 inches in diameter and   feet in length. feet in length.

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The average length of time that a customer waits in line for service is The average length of time that a customer waits in line for service is   where y is the average arrival rate, written as the number of customers per unit of time, and x is the average service rate, written in the same units. Evaluate   . Note: x and y are given as the number of customers per hour. where y is the average arrival rate, written as the number of customers per unit of time, and x is the average service rate, written in the same units. Evaluate The average length of time that a customer waits in line for service is   where y is the average arrival rate, written as the number of customers per unit of time, and x is the average service rate, written in the same units. Evaluate   . Note: x and y are given as the number of customers per hour. . Note: x and y are given as the number of customers per hour.

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Find and simplify the function Find and simplify the function   at the given value   . at the given value Find and simplify the function   at the given value   . .

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Find and simplify the function Find and simplify the function   at the given value   . at the given value Find and simplify the function   at the given value   . .

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Sketch the surface given by the function Sketch the surface given by the function   . .

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According to the Ideal Gas Law, According to the Ideal Gas Law,   where P is pressure, V is volume, T is temperature (in Kelvins), and k is a constant of proportionality. A tank contains 3500 cubic inches of nitrogen at a pressure of 34 pounds per square inch and a temperature of 300 K. Write P as a function of V and T after evaluating k. where P is pressure, V is volume, T is temperature (in Kelvins), and k is a constant of proportionality. A tank contains 3500 cubic inches of nitrogen at a pressure of 34 pounds per square inch and a temperature of 300 K. Write P as a function of V and T after evaluating k.

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Sketch the level curves for the function Sketch the level curves for the function   for the given c-values   . for the given c-values Sketch the level curves for the function   for the given c-values   . .

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A rectangular box with an open top has a length of x feet, a width of y feet, and a height of z feet. It costs $2.10 per square foot to build the base and $0.75 per square foot to build the sides. Write the cost C of constructing the box as a function of x, y, and z.

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