Question

hi

Answer 1

hi :D

Answer 2

how do i calculate this limit (x,y)->(1,1) x^2-y^2/x-y

Answer 3

What does your name mean? just asking :P Wanna broaden my view :)

Answer 4

Notice that x^2-y^2 is factorisable :)

Answer 5

yes go on..

Answer 6

factorise it :D

Answer 7

i like saying factor it instead hm

Answer 8

maybe american english and britain english is different :)

Answer 9

I say similar question in the following link...
I think it is help full to you...

http://answers.yahoo.com/question/index?qid=20100322080146AAYR2Qv

Answer 10

anyways as he said
factor x^2-y^2
\[\lim_{(x,y) \rightarrow (1,1)} \frac{ x^2-y^2 }{ x-y }\]

Answer 11

Then cancel the terms in the numerator and denominator and then plug in (1,1) and evaluate it .

Answer 12

Ok smahil

Answer 13

\[\lim_{(x,y) \rightarrow (1,1)} \frac{ (x-y)(x+y) }{ (x-y) }\]
can you cancel now?

Answer 14

yes I can

Answer 15

from there just evaluate it =)

Answer 16

it remains x+y then i substitute them

Answer 17

yep
1+1

Answer 18

cool

Answer 19

I have an exam on the third of january so maybe you could be of help to me in certain issues before then if you don't mind i'll compensate