Question is as below :

Asked by spuneet23 | 20th Sep, 2010, 05:22: PM

Expert Answer:

Hello,
 
Given: 
f( x+2y, x-2y) = xy;
let  m = x + 2y 
      n = x - 2y 
 
then , x = (m+n)/2 
         y = (m-n)/4
 
Using the above equations we can write:
 
f(m,n) = (m+n)(m-n)/8  
 
or
f (x,y) = (x-y)(x+y)/8 

Answered by  | 20th Sep, 2010, 09:57: PM

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