tìm a biết: A = (1+1/2 ) x (1+1/3)x (1+1/4)x…..x (1+1/100)

1 bình luận về “tìm a biết: A = (1+1/2 ) x (1+1/3)x (1+1/4)x…..x (1+1/100)”

1. A = (1 + 1/2) xx (1 + 1/3) xx (1 + 1/4) xx … xx (1 + 1/100)

    A = (2/2 + 1/2) xx (3/3 + 1/3) xx (4/4 + 1/4) xx … xx (100/100 + 1/100)

   A = 3/2 xx 4/3 xx 5/4 xx … xx 101/100

   A = {3 xx 4 xx 5 xx … xx 101}/{2 xx 3 xx 4 xx … xx 100}

   = 101/2

   text{#maingoctranthi}

   Trả lời