Show that if a,b and c d are positive ( and c and d are rational), then Can we proceed by multiplying the factors like : Can somebody brief me the concept behind this..... I will be greatful....
Follow Math Help Forum on Facebook and Google+
Given , either or . Moreover, since are positive, and ; similarly for . In both cases, and have the same sign (or are zero) and so their product is non-negative.
View Tag Cloud