Các câu hỏi tương tự
A= 1/1x2 + 1/2x3 + 1/3x4 + .........+1/99x100
Tinh: 1/1x2+1/2x3+1/3x4+...+1/99x100
Tim x biet:
A. (x-3/4).(3x+1/2)lon hon hoac bang 0
B. (2x+1).(4x+3)be hon hoac bang 0
giup minh voi:
hay viet 4 phan so lon hon 1/ 3 va be hon 1/2
tim x biet:
( 1/2 +1/3+ 1/4+ 1/5+ 1/6 +1/7)x (2009 * x ) = 0.63* 0.12 - 2,1 * 0,036
Thực hiện các phép tính
B,
1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256
C,
1/1x2 + 1/2x3 + 1/3x4 + ........ + 1/99x100
D,
( 1-1/2 ) x ( 1- 1/3 ) x ( 1-1/4 ) x ....... x ( 1- 1/100 )
1.so sanh a voi b biet
\(a=\frac{1x2}{2x2}x\frac{2x3}{3x3}x\frac{3x4}{4x4}x\frac{4x5}{5x5}x.....x\frac{2012x2013}{2013x2013}\)
\(b=\frac{2012x2013-2012x2012}{2012x2011+2012x2}\)
AI LÀM DUNG NHAT ,DAU TIEN MINH LIKE
A=1x2+2x3+3x4+...+49x50
B=1x3+3x5+5x7+...+99x101
C=1x2x3+2x3x4+3x4x5+...+50x51x52
D=1x4+2x5+3x6+...+60x63
E=1x1+2x2+3x3+...+50x50
F=1x1+3x3+5x5+...+71x71
G=1x1+4x4+7x7+...+100x100
I=1x2x3+3x4x5+5x6x7+...+69x70x71
7 tháng 4 2022 lúc 16:35
1/1x2 + 1/2x3 + 1/3x4 + ... 1/99 x 100
Tìm x biết 1/1x2 + 1/2x3 + 1/3x4 + ... + 1/X(X+1) = 99/100
(1-1/2)(1-1/3)(1-1/4)….(1-1/2002).x=1-1/1x2-1/2x3-1/3x4-...1/2002x2003