A= 1/4+1/9+1/16+...+1/81+1/100.Chung to A>65/132
Cho A=1/4+1/9+1/16+....+1/81+1/100.Chứng tỏ rằng:A>65/132
cho A= 1/4 + 1/9 + 1/16 +......+1/81 + 1/100 . Chứng tỏ rằng : A>65/132
Cho A=1/4+1/9+1/16+.....+1/81+1/100.
Chứng tỏ A>65/132
Cho A = 1/4 + 1/9 + 1/16 + ... + 1/81 + 1/100. Chứng tỏ rằng A > 65/132
Cho A= 1/4 + 1/9 + 1/16 +...+ 1/81 + 1/100
Chứng minh A > 64/135
Cho A = 1/4+1/9+1/16+...+1/81+1/100
CHỨNG TỎ RẰNG. A>65/132
Tính : A = 1 + 4 + 9 + 16 + .... + 81
Cho A=1/4+1/9+1/16+...+1/81+1/100
CMR A>65/132