Các câu hỏi tương tự
Cho S=1+3+3^3+......+3^31.Tim chu so tan cung cua S , tu do suy ra S k phai la so chinh phuong
cho S=2.1+2.3+2.32+....+2.32004
a)thu gon S
b)tim so tan cung cua S. tu do suy raS khong phai la so chinh phuong
: Cho S = 2. 1 + 2. 3 + 2. 3 ^2 + ... + 2. 3 ^2004 a) Thu gon S b) Tim chu so tan cung cua S. Tu do suy ra S khong phai la so chinh
phuong.
Cho S=1+3+32+33+....+330
Tim CS tan cung cua S roi suy ra S ko phai la so chinh phuong
Giup mk voiiiiiiiiiiii
cho S=1^2+2^2+3^2+...+56^2. S co phai la so chinh phuong khong
cho S=1+3^1+3^2+3^3+...........+3^28+3^29+3^30
CMR:S khong phai la so chinh phuong
tim so tu nhien lon hon 0 sao cho tong
1!+2!+...+n! la so chinh phuong
b)tim 1 so co 4 chu so sao cho so do vua la s chinh phuong vua la so lap phuong
1+3+5+.......+(2n-1) , n thoc so tu nhien khac 0 . n co phai la so chinh phuong khong
Cho S = 2011.72015+4.19766 mu2015
Tim chu so tan cung cua S.S co phai la so chinh phuong ko?