Let f(x, y)=V2x+4y² + 18-x. The domain of c for which the level curve f(x, y)=c is an ellipse is O (-,-4)U(4, x) o (,-2)U(2, x) O (-, -3)U(3, x) O (-x, -5)U(5, x) o (-x, -1)U(1, x)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Let f(x, y)=V2x+4y + 18-x. The domain of c for which the level curve f(x, y)=c is an ellipse is
O (-,-4)U(4, c)
o (-x,-2)U(2, x)
O (-,-3)U(3, x)
0 (-x, -5)U(5, x)
0(-x, -1)U(1, 0)
Transcribed Image Text:Let f(x, y)=V2x+4y + 18-x. The domain of c for which the level curve f(x, y)=c is an ellipse is O (-,-4)U(4, c) o (-x,-2)U(2, x) O (-,-3)U(3, x) 0 (-x, -5)U(5, x) 0(-x, -1)U(1, 0)
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