Processing math: 100%
jimmy crazy | Chat Online
29/12/2024 14:02:09

Cho P = 1 + 1/2(1+2) + 1/3(1+2+3) + ......+ 1/2021 (1 + 2 +.....+2021). Chứng minh rằng P > 10^6


----- Nội dung ảnh -----
1. Cho P=1+12(1+2)+13(1+2+3)++12021(1+2++2021). Chứng minh rằng P>106.
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