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
Chứng minh rằng:
a) A=1+1/2^2+1/3^2+1/4^2+...+1/100^2 bé hơn 2
b) B=1+1/2+1/3+1/4+...+1/63 bé hơn 6
c)M=1/3+1/31+1/35+1/37+ 1/47+1/53+1/61 bé hơn 1/2
d)C=1/2.3/4.5/6....9999/10000 bé hơn 1/100
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
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 chung minh rang1/15<a<1/10
Cho A = 1/2.3/4.5/6....99/100
Chứng minh 1/15<A<1/10