Các câu hỏi tương tự
chung minh 1-1/2 mu 2 -1/ 3 mu 2 - 1/ 4 mu 2 - ... - 1/2015 mu 2 > 1/2015
4*(-1/2) mu 3 -2*(-1/2) mu 2-3*(-1/2) mu 1
4*(-1/2) mu 3 -3*(-1/2) mu 2-3*(-1/2) mu 1
Cm 1/2 mu 2 - 1/ 2mu 4 + 1/ 2 mu 6-...-1/2mu 4n -2 -1/2 mu 4n + ...+ 1/ 2 mu 2014 - 1/ 2 mu 2016 < 0,2
Cm 1/2 mu 2 - 1/ 2mu 4 + 1/ 2 mu 6-...-1/2mu 4n -2 -1/2 mu 4n + ...+ 1/ 2 mu 2014 - 1/ 2 mu 2016<0,2
c/m 1/2mu 3 +1/3 mu 3 +..................+1/ 2006 mu 3<1/4
c/m 1/2 mu 3 +1/3 mu 3 +..................+1/2006 mu3 >1/15
Cho S =1/5+2/5 mu 2 +3/5mu 3 +4/5 mu 4+....+2012/5 mu 2012
So sánh S với 1/3
[1/2x mu 2(2x-1) mu m-1/2 x mu(m +2]:1/2x mu 2 =0
tim x
cho da thuc f(x)=1+x mu 2 +x mu 4 +...+x mu 2010. tinh f(-1), f(1)