Let f(x,y) be a function for which you are given the following information: F(0,0) = 3 . The level curve f= 3 has tangent line given by 2 x – 5 y = 0 at (0,0). F(0,0) < 0. Determine the direction of maximal change for f at (0,0). Express your answer as a unit vector. i+ j If you move in the direction of 1 i+ 9 j at (0,0), what happens to the value of f? O It increases It decreases O It stays the same Not enough information to tell Moving in which of the following directions from (0,0) will decrease the value of f the most? O (4,2) O (5,2) O (6,2) O (-4,-2) O Either (6,2) or (-4,-2) Either (6,2) or (4,-2) O Not enough information to tell.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let f(x,y) be a function for which you are given the following information:
F(0,0) = 3.
The level curve f= 3 has tangent line given by 2 x – 5 y = 0 at (0,0).
f,(0,0) < 0.
Determine the direction of maximal change for f at (0,0). Express your answer as a unit vector.
i+
j
If you move in the direction of 1 i + 9j at (0,0), what happens to the value of f?
O It increases
O It decreases
O It stays the same
O Not enough information to tell
Moving in which of the following directions from (0,0) will decrease the value of f the most?
O (4,2)
O (5,2)
O (6,2)
O (-4,-2)
Either (6,2) or (-4,-2)
O Either (6,2) or (4,-2)
O Not enough information to telI.
Which of the following values is the smallest?
O f(0,0)
O f(4,2)
O f(5,2)
O f(6,2)
O f(-4,-2)
O Both f(6,2) and f(-4,-2)
Both f(6,2) and f(4,-2)
O Not enough information to tell.
Transcribed Image Text:Let f(x,y) be a function for which you are given the following information: F(0,0) = 3. The level curve f= 3 has tangent line given by 2 x – 5 y = 0 at (0,0). f,(0,0) < 0. Determine the direction of maximal change for f at (0,0). Express your answer as a unit vector. i+ j If you move in the direction of 1 i + 9j at (0,0), what happens to the value of f? O It increases O It decreases O It stays the same O Not enough information to tell Moving in which of the following directions from (0,0) will decrease the value of f the most? O (4,2) O (5,2) O (6,2) O (-4,-2) Either (6,2) or (-4,-2) O Either (6,2) or (4,-2) O Not enough information to telI. Which of the following values is the smallest? O f(0,0) O f(4,2) O f(5,2) O f(6,2) O f(-4,-2) O Both f(6,2) and f(-4,-2) Both f(6,2) and f(4,-2) O Not enough information to tell.
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