Q1. xy+4 i. Evaluate lim(x.y)-(0,2) x2+y2 ii. If x + y = 2e® coso and x- y = 2v-1 e® sing then show that azu 4ху дхду a2u a2u a02

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 21RE
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Q1.
ху+4
i. Evaluate lim(x,y)¬(0,2)
x2+y2
ii.
If x + y = 2eº coso and x-y = 2v-1 esino then show that
a?u, a2u
azu
4xy
дхду
a02
CS Scanned with CamScanner
Transcribed Image Text:Q1. ху+4 i. Evaluate lim(x,y)¬(0,2) x2+y2 ii. If x + y = 2eº coso and x-y = 2v-1 esino then show that a?u, a2u azu 4xy дхду a02 CS Scanned with CamScanner
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