Question

Dau coroana
Comparați a=15 la puterea 26 si b=31 la puterea 19

Answer 1

15^26>

31^19

"^,, insesmana la puterea...

Answer 2

31^19<30^19=(2*15)^19=2^19 * 15^19=2^3 * 2^16 * 15^19=8* (2^4)^4 *15^19=8* 16^4 * 15^19 <8* 15^4 * 15^19= 8*15^23

15^26=15^3 * 15^23=15*225* 15^23 care este evident > 8*15^23

Concluzie a>b