A=2.2+4.4+6.6+...+98.98+100.100
2.2+4.4+6.6+....+98.98
tính 2.2 + 4.4 + 6.6 + ....98.98
Chứng minh A=1/2.2+1/4.4+1/6.6+............+1/100.100<1/2
Help
A.2.2+4.4+6.6+8.8+...+100.100
B.1.1+3.3+5.5+...+99.99
E= 1.1+2.2+3.3+...+50.50
F = 1.1+3.3+5.5+...+45.45
G=2.2+4.4+6.6+...+30.30
H=1.1+4.4+7.7+...+100.100
Giải Cụ thể ạ
Em đang cần gấp ạ
A =1.1+ 2.2+ 3.3+ 4.4+ ..... +99.99+ 100.100
2.2+4.4+6.6+...+20.20
E= 1.1+2.2+3.3+4.4+......+100.100
