Các câu hỏi tương tự
Chứng minh rằng
A=1/2 - 2/2^2 + 3/2^3 - 4/2^4 + ...99/2^99 - 100/2^100 < 2/9
chứng minh rằng A=1\2-2\2^2+3\2^3-4\2^4+.......+99\2^99-100\2^100<2\9
ai đúng mình lik cho nha
bài 1
A=1*2*3+2*3*4+3*4*5+...+99*100*101
B=1*3*5+3*5*7+...+95*97*99
C=2*4+4*6+..+98*100
D=1*2+3*4+5*6+...+99*100
E=1^2+2^2+3^2+...+100^2
G=1*3+2*4+3*5+4*6+...+99*101+100*102
H=1*2^2+2*3^2+3*4^2+...+99*100^2
I=1*2*3+3*4*5+5*6*7+7*8*9+...+98*99*100
K=1^2+3^2+5^2+...+99^2
Chứng minh rằng A=1/2-2/22+3/23-4/24+.....+99/299-100/2100<2/9
chứng minh rằng:
A=1/2-2/22+3/23-4/24+...+99/299-100/2100<2/9
\(\frac{1}{2}-\frac{-2}{2^2}+\frac{3}{2^3}-\frac{4}{2^4}+\frac{4}{2^5}+...+\frac{99}{2^{99}}-\frac{100}{2^{100}}< \frac{2}{9}\)
Chứng minh
Chứng minh rằng : A= \(\frac{1}{2}+\frac{2}{2^2}+\frac{3}{2^3}-\frac{4}{2^4}+....+\frac{99}{2^{99}}-\frac{100}{2^{100}}< \frac{2}{9}\)\(\frac{2}{9}\)
CMR
1/2-2/2^2+3/2^3-4/2^4+.....+99/2^99-100/2^100<2/9
CMR: A= 1/2-2/2^2+3/2^3-4/2^4+....+99/2^99-100/2^100<2/9