Question

[Jfyj Hdthh]

So sánh : 3^{78 và}11⁴²

Answer 1

[pham trung thanh]

ta có\(3^{78}=9^{39}\)

Do\(9< 11\)và\(39< 42\Rightarrow9^{39}< 11^{42}\Leftrightarrow3^{78}< 11^{42}\)

Vậy\(3^{78}< 11^{42}\)