Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: 1/3+1/6+1/9+…+1/59049 rút gọn

Toán Lớp 9: 1/3+1/6+1/9+…+1/59049
rút gọn

Comments ( 2 )

  1. Giải đáp:
    29524/59049
    Lời giải và giải thích chi tiết:
    Đặt A=1/3+1/9+1/27+1/81+…+1/95049
    A3=1+1/3+1/9+1/27+1/81+…+1/19683
    A3-A=1-1/59049
    2A=59048/59049
    A=59048/59049 . 1/2
    A=29524/59049
    hay 1/3+1/9+1/27+1/81+…+1/95049 = 29524/59049

Leave a reply

222-9+11+12:2*14+14 = ? ( )