Exam 13: Section 6: Functions of Several Variables

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Let Let   , where   ,   , and   . Find   . , where Let   , where   ,   , and   . Find   . , Let   , where   ,   , and   . Find   . , and Let   , where   ,   , and   . Find   . . Find Let   , where   ,   , and   . Find   . .

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D

Find Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. where Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. and Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. , and evaluate the partial derivative at Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. and Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. . Round your answer to two decimal places.

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C

The two radii of the frustum of a right circular cone are increasing at a rate of 4 centimeters per minute, and the height is increasing at a rate of 12 centimeters per minute (see figure). Find the rate at which the volume is changing when the two radii are 15 centimeters and 30 centimeters, and the height is 10 centimeters. The two radii of the frustum of a right circular cone are increasing at a rate of 4 centimeters per minute, and the height is increasing at a rate of 12 centimeters per minute (see figure). Find the rate at which the volume is changing when the two radii are 15 centimeters and 30 centimeters, and the height is 10 centimeters.

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B

Find Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. where Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. and Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. , and evaluate the partial derivative at Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. and Find   using the appropriate Chain Rule for   where   and   , and evaluate the partial derivative at   and   . Round your answer to two decimal places. . Round your answer to two decimal places.

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The radius of a right circular cylinder is increasing at a rate of 9 inches per minute, and the height is decreasing at a rate of 7 inches per minute. What is the rate of change of the surface area when the radius is 12 inches and the height is 32 inches?

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Find Find   using the appropriate Chain Rule for   where   and   . using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   and   . where Find   using the appropriate Chain Rule for   where   and   . and Find   using the appropriate Chain Rule for   where   and   . .

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The radius of a right circular cylinder is increasing at a rate of 6 inches per minute, and the height is decreasing at a rate of 4 inches per minute. What is the rate of change of the volume when the radius is 14 inches and the height is 32 inches?

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Let Let   , where   and   . Find   . , where Let   , where   and   . Find   . and Let   , where   and   . Find   . . Find Let   , where   and   . Find   . .

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The parametric equations for the paths of two projectiles are given below. At what rate is the distance between the two objects changing at The parametric equations for the paths of two projectiles are given below. At what rate is the distance between the two objects changing at   ? Round your answer to two decimal places.  ? Round your answer to two decimal places. The parametric equations for the paths of two projectiles are given below. At what rate is the distance between the two objects changing at   ? Round your answer to two decimal places.

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Let Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. meter per hour and Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. is increasing at Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. radian per hour. Find the rate of increase of the area when Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. and Let   be the angle between equal sides of an isosceles triangle and let x be the length of these sides. x is increasing at   meter per hour and   is increasing at   radian per hour. Find the rate of increase of the area when   and   . Round your answer to three decimal places. . Round your answer to three decimal places.

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Find Find   using the appropriate Chain Rule for   where   and   . using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   and   . where Find   using the appropriate Chain Rule for   where   and   . and Find   using the appropriate Chain Rule for   where   and   . .

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Find Find   using the appropriate Chain Rule for   where   , and   . using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   , and   . where Find   using the appropriate Chain Rule for   where   , and   . , and Find   using the appropriate Chain Rule for   where   , and   . .

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Differentiate implicitly to find Differentiate implicitly to find   , given   . , given Differentiate implicitly to find   , given   . .

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Find Find   using the appropriate Chain Rule for   where   . using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   . where Find   using the appropriate Chain Rule for   where   . .

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Let Let   , where   and   . Find   . , where Let   , where   and   . Find   . and Let   , where   and   . Find   . . Find Let   , where   and   . Find   . .

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Differentiate implicitly to find Differentiate implicitly to find   , given   . , given Differentiate implicitly to find   , given   . .

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The two radii of the frustum of a right circular cone are increasing at a rate of 7 centimeters per minute, and the height is increasing at a rate of 11 centimeters per minute (see figure). Find the rate at which the surface area is changing when the two radii are 16 centimeters and 26 centimeters, and the height is 13 centimeters. [Note: The surface area does not include the top and bottom circles.] Round your answer to two decimal places. The two radii of the frustum of a right circular cone are increasing at a rate of 7 centimeters per minute, and the height is increasing at a rate of 11 centimeters per minute (see figure). Find the rate at which the surface area is changing when the two radii are 16 centimeters and 26 centimeters, and the height is 13 centimeters. [Note: The surface area does not include the top and bottom circles.] Round your answer to two decimal places.

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Find Find   using the appropriate Chain Rule for   where   , and   . using the appropriate Chain Rule for Find   using the appropriate Chain Rule for   where   , and   . where Find   using the appropriate Chain Rule for   where   , and   . , and Find   using the appropriate Chain Rule for   where   , and   . .

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Differentiate implicitly to find Differentiate implicitly to find   .  . Differentiate implicitly to find   .

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Evaluate Evaluate   at   using the appropriate Chain Rule for   where   and   . Round your answer to two decimal places. at Evaluate   at   using the appropriate Chain Rule for   where   and   . Round your answer to two decimal places. using the appropriate Chain Rule for Evaluate   at   using the appropriate Chain Rule for   where   and   . Round your answer to two decimal places. where Evaluate   at   using the appropriate Chain Rule for   where   and   . Round your answer to two decimal places. and Evaluate   at   using the appropriate Chain Rule for   where   and   . Round your answer to two decimal places. . Round your answer to two decimal places.

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