The height of a hill (in feet) is given by h(x, y) = 21(14-4x-4y+3xy+28x-17y) where X is the distance (in miles) east and y is the distance (in miles) north of your cabin If you are at a point on the hill 1 mile north and 1 mile east of your cabin, what is the rate of change of the height of the hill (a) in a northerly direction and (b) in an easterly direction? O a. (a) 462 ft/mi, (b) 483 ft/mi Ob. (a) -462 ft/mi, (b) 483 ft/mi Oc (a) 483 ft/mi, (b) -462 ft/mi Od. (a) 483 ft/mi, (b) 462 ft/mi Moving to another

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...
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The height of a hill (in feet) is given by
h(x, y) = 21(14- 4x?-4y²+3xy +28x-17y)
where X is the distance (in miles) east and y is the distance (in miles) north of your cabin If you are at a point on the hill 1 mile north and 1 mile east of your cabin, what is the rate of
change of the height of the hill (a) in a northerly direction and (b) in an easterly direction?
Oa. (a) 462 ft/mi, (b) 483 ft/mi
Ob.(a) -462 ft/mi, (b) 483 ft/mi
Oc (a) 483 ft/mi, (b) -462 ft/mi
Od. (a) 483 ft/mi, (b) 462 ft/mi
Moving to another
Transcribed Image Text:The height of a hill (in feet) is given by h(x, y) = 21(14- 4x?-4y²+3xy +28x-17y) where X is the distance (in miles) east and y is the distance (in miles) north of your cabin If you are at a point on the hill 1 mile north and 1 mile east of your cabin, what is the rate of change of the height of the hill (a) in a northerly direction and (b) in an easterly direction? Oa. (a) 462 ft/mi, (b) 483 ft/mi Ob.(a) -462 ft/mi, (b) 483 ft/mi Oc (a) 483 ft/mi, (b) -462 ft/mi Od. (a) 483 ft/mi, (b) 462 ft/mi Moving to another
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