Question

Ma puteti ajuta? Ofer coroana daca este corect.

Answer 1

c. a<b,a+1<b+1⇒a/a+1<b/b+1;
d. a<b ,c>0 ,a/b=a/b ,dar 2013·c=2013·c;
⇒a+2013c/b+2013c>a/b;
e. a/b=a/b ,c=c[c>0];
a<b⇒a/b<a+c/b+c;