Here's the problem: Sq root(ab) ≤ (a+b)/2 So I'm stuck here, how do I prove that a and b are positive real numbers? Should I go with a counterexample?
Follow Math Help Forum on Facebook and Google+
a= -1 b= -1 sqrt(ab)=sqrt(1)=1 (a+b)/2 = (-1-1)/2 = -1 sqrt(ab)>(a+b)/2
Originally Posted by bxuan Here's the problem: Sq root(ab) ≤ (a+b)/2 prove that a and b are positive real numbers? It is true so . If then let .
View Tag Cloud