10ⁿ

1 + 4 = 5

5 + 2 + 5 = 12

12 + 3 + 6 = 21

21 + 4 + 7 = 32

32 + 5 + 8 = 45

45 + 6 + 9 = 60

60 + 7 + 10 = 77

77 + 8 + 11 = 96

Vì GTTĐ \(\ge\) 0 nên GTNN cua bieu thuc = 0 + 0 + 4/5 = 4/5.

Ta có: a . b = 2 ; b . c = 3 ; c . a = 54

\(\Rightarrow\) a . b . b . c . c . a = 2 . 3 . 54 = 324

hay a² . b² . c² = 324 hay ( a . b . c )² = 324

\(\Rightarrow\) a . b . c = 18

hay 2 . c = 18 \(\Rightarrow\) c = 9

hay a . 3 = 18 \(\Rightarrow\) a = 6

hay b . 54 = 18 \(\Rightarrow\) b = 1/3

- Kha nang tinh toan va su dung ham co san

- Kha nang sap sep va loc du lieu

- Tao bieu do