5) Prove that the order of iteration of limits can be significant by showing that х2 lim(lim у-0 "х-0 х2 + y х2 lim(lim х э0 "у >0 х2 + y

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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5) Prove that the order of iteration of limits can be significant by showing that
х2
lim(lim
у-0 "х-0 х2 + y
х2
lim(lim
х э0 "у >0 х2 + y
Transcribed Image Text:5) Prove that the order of iteration of limits can be significant by showing that х2 lim(lim у-0 "х-0 х2 + y х2 lim(lim х э0 "у >0 х2 + y
Expert Solution
Step 1

It is needed to prove that order of iteration of limits can be significant by showing that:

2
lim lim-
x 0y0
lim lim
y x0
2
2
Step 2

Now, first simplify the left hand side:

х"
lim
lim lim
x0y0 1,2
= lim
2.
2
x 0
2
х>0
х—0
lim(1)
х>0
=1
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