Các câu hỏi tương tự
chung minh rang 1-1/2^2-1/3^3-1/4^2-....-1/100^2>1/100
please,who can help me?
chung minh rang 2 so19941oo-1 va 1994100+1 khong the dong thoi nguyen to
Help me
Chung minh rang cac so sau nguyen to cung nhau
Voi n thuoc N
a, n va n+1
b, 2.n+1 va 3.n +1
c, 7.n+10 va 5.n+7
a,A=1/1^2+1/2^2+1/3^2+1/4^2+...+1/50^2.chung minh rang a<2
b;2^1+2^2+2^3+...+2^30.chung minh rang B chia het cho21
Cho n thuoc N*, chung to rang \(\frac{1}{1^2}\)+ \(\frac{1}{2^2}\)+ \(\frac{1}{3^2}\)+....+ \(\frac{1}{n^2}\)khong phai la mot so tu nhien
Help me!!!!!!!!!!
chung minh 1+2010^1+2010^2+2010^3+2010^4+2010^5+2010^6+2010^7 chia het cho11 help me
Cho S=1/3+1/3^2+1/3^3+...+1/3^2015 Chung minh rang s<1/2
giai bai toan : chung minh rang : 1+1/2+1/3+1/4+..+1/32>3
chung minh rang C=1/3+1/3^2+1/3^3+...+1/3^60
C<1/2