SO SÁNH
A, A=\(\frac{2015^{2015}+1}{2015^{2014}+1}VÀB=\frac{2015^{2014}+1}{2015^{2013}+1}\)
B, B= \(\frac{2010^{2015}+1}{2010^{2016}+1}VÀC=\frac{2010^{2014}+1}{2010^{2015}+1}\)
\(SOSANH\)
\(A=\frac{2010^{2015}+1}{2010^{2016}+1}VÀB=\frac{2010^{2014}+1}{2010^{2015}+1}\)
tính B= 1+2015+2015^2+......+2015^2010
1Tinhs :A=1+2-3-4+5+6-7-8+.....+2005+2006-2007-2008+2009+2010-2011-2012+2014+2015-2016
HELP ME ! CÓ TICK
Tính:
A=(\(\frac{1}{2009}+\frac{1}{2010}+...+\frac{1}{2015}+\frac{1}{2016}\)):(\(\frac{1}{1}-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{2015}-\frac{1}{2016}\))
So sánh :
a) A = 2009 x 2011 và B = 20102
b) A = 2015 x 2017 và B = 2016 x 2016
Tìm x biết : | x - 2015 | = 20100 + 12015
Tính: A=(1/1009 1/1010 ... 1/2015 1/2010):(1/1-1/2 1/3-1/4 ... 1/2015-1/2016)
x1+x2+x3+....+x2015=0 và x1+x2=x3+x4=...=x2009+x2010=x2011+x2012=x2013+x2014=2. Tính x2015