Question

cum se rezolva [a,b]=150 si a inmultit cu b=750 cu aflam a si b rapid va rog

Answer 1

a=150/k;
b=150/y;
⇒a·b=750;
⇒150/k ·150/y=750
⇒150²/k·y=750
⇒22500/k·y=750
⇒k·y=22500/750
⇒k·y=30;
⇒k,y∈[1,30],[2,15],[3,10],[5,6],[6,5],[10,3],[15,2],[30,1]⇒8 solutii;
⇒a,b∈[150,5],[75,10],[50,15],[30,25],[25,30],[50,15],[10,75],[5,150];