Tính tổng
1/1x1/2x1/3x1/4x...x99/100
Tính tổng
1/1x1/2x1/3x1/4x...x99/100
a)[1-1/2]x[1-1/3]x[1-1/4]x..........[1-1/18]x[1-1/19]x[1-1/20]
b)1/1/2x1/1/3x1/1/4x1/1/5........x1/1/2005x1/1/2006x1/1/2007
1/1x1/2+1/2x1/3+1/3x1/4+1/4x1/5+1/5x1/6
Tính:(1-1/2x1/2)x(1-1/3x1/3)x(1-1/4x1/4)x…x(1-1/2007x1/2007)
Tính:
(1-1/2x1/2)x(1-1/3x1/3)x(1-1/4x1/4)x…x(1-1/2007x1/2007)
tính 1 1/3x1 1/8x1 1/5x1 1/24x......x1 1/99
mik cần gấp
tính
1/1/3x1/1/8x1/1/15x1/1/24x...x1/1/99
A=1/2x1/6x1/12x1/20x...........x1/2450x1/2550
