chung minh rang tong sau khong phai la so tu nhien
1/2+1/3+1/4+1/5+1/6+...+1/16
chung minh rang A = 1/2 + 1/3 + 1/4 +...+ 1/50 khong phai la so tu nhien
chug minh 1/4+1/5+...+1/2500 khong phai la so tu nhien
cho A= 1/2+1/3+1/4+....+1/16. Chung to rang A khong la so tu nhien
1+3+5+.......+(2n-1) , n thoc so tu nhien khac 0 . n co phai la so chinh phuong khong
chung minh C =49/1 +48/2 +...+2/48 +1/49 khong phai la so tu nhien
chung minh rang S=1/2+1/3+...+1/16 khong la so tu nhien
Voi n la so tu nhien, cho: A=20134n(2013(4n+3)-1)-1. Chung minh rang A khong phai la so nguyen to.
cho a =1/2^2 +1/2^3 +1/2^4+.....+1/2^100 c/m A khong phai la so tu nhien
CAC BAN GIUP MINH GIAI NHE! AI GIAI DUNG MINH TICH CHO
