If x and y are positive and x2+y2=100 then for which of the following is the value of x + y greatest?
Let us take the options one by one,
A. x = 10=>y=0; x+y=10
B. x = 9=>y=(19)^0.5; x+y=13.35
C. x = 8=>y=6; x+y=14
D. x = 7=>y=(51)^0.5; x+y=14.14 Hence Maximum and answer
E. x = 6=>y=8; x+y=14
Let us take the options one by one,
A. x = 10=>y=0; x+y=10
B. x = 9=>y=(19)^0.5; x+y=13.35
C. x = 8=>y=6; x+y=14
D. x = 7=>y=(51)^0.5; x+y=14.14 Hence Maximum and answer
E. x = 6=>y=8; x+y=14
Statistics : Posted by Paras96 • on 05 Apr 2021, 01:00 • Replies 7 • Views 3539