`Ta` `có :`
`1/\sqrt[1] + 1/\sqrt[2] + 1/\sqrt[3] + ... + 1/\sqrt[100]` `>` `1/\sqrt[100] + 1/\sqrt[100] + 1/\sqrt[100] + ... + 1/\sqrt[100]`
`⇔ 1/\sqrt[1] + 1/\sqrt[2] + 1/\sqrt[3] + ... + 1/\sqrt[100]` `>` `100/\sqrt[100]`
`⇔ 1/\sqrt[1] + 1/\sqrt[2] + 1/\sqrt[3] + ... + 1/\sqrt[100]` `>` `100/10`
`⇔ 1/\sqrt[1] + 1/\sqrt[2] + 1/\sqrt[3] + ... + 1/\sqrt[100]` `>` `10`
Xin hay nhất !
