32476387219634651600.613130+6.56.12654920586246194369163412091.54631334196131+63413+423674504+40161*-40215621-03415101101643.4106.2123450241.40
12205422+
4103412503212546312231213.1020.0101010201.41021+074-+5202420859*524242072-426345744565474247322431423-l\;./l\/+256594512=
A,Cho S=1/2.3/4.5/6.7/8...99/100
chứng minh rằng S<0,01
b,cho A=1/2.3/4.5/6.7/8...79/80 Chứng minh rằng A<1/9
Cho A=1/2.3/4.5/6...199/200. Chứng minh rằng A2 < 1/201
chứng minh rằng : A=1/2.3/4.5/6.....99/100<1/100
A=1/2.3/4.5/6.....99/100.Chứng minh rằng 1/15<A<1/10
Cho A=1/2.3/4.5/6...99/100. Chứng minh rằng 1/15<A<1/10
Cho A= 1/2.3/4.5/6....99/100. Chứng minh rằng: 1/15 < A < 1/10
Cho A = 1/2.3/4.5/6.........99/100
Chứng minh rằng 1/15 < A >1/10
Cho A= 1/2.3/4.5/6....99/100
Chứng minh rằng 1/15 bé hơn A bé hơn 1/10
\(Cho A= 1/2.3/4.5/6....99/100. Chứng minh rằng: 1/15 < A < 1/10\)
