Các câu hỏi tương tự
A= 1/3 - 2/ 32 + 3/ 33 - 4/ 34 + .... + 99/ 399 - 100/ 3100 < 3/ 16
A= 1/3 - 2/ 32 + 3/ 33 - 4/ 34 + .... + 99/ 399 - 100/ 3100 < 3/ 16
Cho S= 1/3-2/32+3/33-4/34+...+99/399-100/3100. So sánh S và 1/5
1.Chứng minh rằng a)1/2-1/4+1/8-1/16+1/32-1/64<1/3 b)1/3-2/3^2+3/3^3-4/3^4+...+99/3^99-100/3^100<3/16
Chứng minh rằng:
a) 1/2-1/4+1/8-1/16+1/32-1/64<1/3
b) 1/3-2/3^2+3/3^3-3/3^4+...+99/3^99-100/3^100<3/16
a) chứng minh rằng
1/2-1/4+1/8-1/16+1/32-1/64<1/3
1/3-2/32+3/33-4/34+...............+99/399-100/3100<3/16
Chứng minh rằng
1/2 -1/4+1/8 - 1/16 +1/32-1/64 <1/3
1/3-2/32+ 3/33 - 4/34 + 99/3 -100/3100 <3/16
chứng minh rằng : a) 1\2-1\4+1\8-1\16+1\32-1\64 <1\3
b)1\3-2\32+3\33-4\34+.....+99\399-100\3100<3\16
CHỨNG MINH RẰNG
1/3 - 2/ 32 + 3/ 33 - 4/ 34 + .... + 99/ 399 - 100/ 3100 < 3/ 16
1/2-1/4+1.8-1/16+1/32-1/64<1/3