If w,x,y,z are non-zero positive integer, then find the maximum value of (1/w)-(1/x)+(1/y)-(1/z).

Option not remember

• By logically if...we preserve {(1/w) and (1/y)} and loosing the value of {(1/x) and (1/z)} then only we get max values.
  
  (1/w) and (1/y) will give max value iff w = y = 1;
  
  so, (1/1) - (1/greatest value of x) + (1/1) - (1/greatest value of z)
  => 1 - 0 (tends to 0) + 1 - 0 (tends to 0);
  =2-0
  =2
• 7 years agoHelpfull: Yes(17) No(2)
• 0 will be the answer...
• 7 years agoHelpfull: Yes(0) No(3)
• W=1 Y=1, x=-1,Y=-1
• 6 years agoHelpfull: Yes(0) No(3)