Posted by Anubhav on .
x and
y are positive values satisfying
x+y=1/4
. When
ln(y^2+4xy+7) attains its maximum(subject to the given constraint), what is the value of 1/xy
?

helllllp MATHS 
Reiny,
answered by Steve yesterday
http://www.jiskha.com/display.cgi?id=1368459584