two-path test, f has no limit as (x,y) approaches (0,0).

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter4: Calculating The Derivative
Section4.CR: Chapter 4 Review
Problem 27CR
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By considering different paths of approach, show that the function below has no limit as (x,y)→(0,0).
x? +y
h(x,y) =
y
Examine the values of h along curves that end at (0,0). Along which set of curves is ha constant value?
O A. y= kx?, x+0, k 0
O B. y= kx, x#0, k #0
OC. y= kx°, x ± 0, k ± 0
O D. y= kx + kx?, x 0, k 0
If (x,y) approaches (0,0) along the curve when k = 1 used in the set of curves found above, what is the limit?
(Simplify your answer.)
If (x.y) approaches (0,0) along the curve when k = 2 used in the set of curves found above, what is the limit?
(Simplify your answer.)
What can you conclude?
O A. Since f has two different limits along two different paths to (0,0), by the two-path test, f has no limit as (x,y) approaches (0,0).
O B. Since f has two different limits along two different paths to (0,0), it cannot be determined whether or not f has a limit as (x,y) approaches (0,0).
OC. Since f has the same limit along two different paths to (0,0), by the two-path test, f has no limit as (x,y) approaches (0,0).
O D. Since f has the same limit along two different paths to (0.0), it cannot be determined whether or not f has a limit as (x,y) approaches (0,0).
Transcribed Image Text:By considering different paths of approach, show that the function below has no limit as (x,y)→(0,0). x? +y h(x,y) = y Examine the values of h along curves that end at (0,0). Along which set of curves is ha constant value? O A. y= kx?, x+0, k 0 O B. y= kx, x#0, k #0 OC. y= kx°, x ± 0, k ± 0 O D. y= kx + kx?, x 0, k 0 If (x,y) approaches (0,0) along the curve when k = 1 used in the set of curves found above, what is the limit? (Simplify your answer.) If (x.y) approaches (0,0) along the curve when k = 2 used in the set of curves found above, what is the limit? (Simplify your answer.) What can you conclude? O A. Since f has two different limits along two different paths to (0,0), by the two-path test, f has no limit as (x,y) approaches (0,0). O B. Since f has two different limits along two different paths to (0,0), it cannot be determined whether or not f has a limit as (x,y) approaches (0,0). OC. Since f has the same limit along two different paths to (0,0), by the two-path test, f has no limit as (x,y) approaches (0,0). O D. Since f has the same limit along two different paths to (0.0), it cannot be determined whether or not f has a limit as (x,y) approaches (0,0).
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