Find the following limit if it exists, or show that the limit does not exist, y? sin? x lim (z,y)¬(0,0) x4 +y4

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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1. A)
Find the following limit if it exists, or show that the limit does not exist,
sin x
lim
(x,4)¬(0,0) x4+y4
B)
The partial differential equation
Uer + Uyy = 0
is called Laplace's equation. Show that the function
u (x, y) = e cos y - e cos a
is a solution of Laplace's equation.
Find symmetric equations for the tangent line to the space curve given by
C)
I (t) = (e-t cos t, e-t sin t, e-t) at the point (1,0, 1) in R°. Justify your answer.
Transcribed Image Text:1. A) Find the following limit if it exists, or show that the limit does not exist, sin x lim (x,4)¬(0,0) x4+y4 B) The partial differential equation Uer + Uyy = 0 is called Laplace's equation. Show that the function u (x, y) = e cos y - e cos a is a solution of Laplace's equation. Find symmetric equations for the tangent line to the space curve given by C) I (t) = (e-t cos t, e-t sin t, e-t) at the point (1,0, 1) in R°. Justify your answer.
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