Question

[Nguyên nha hieu]

a) x1+x2=x3+x4=x5+x6=...........=x2012+x2013=2                         b) x+1+x+2+.......+x+2013=0

tìm x2013

Answer 1

[Võ Đông Anh Tuấn]

X1=X3=X5---------=X2013 X2=X4=X6=--------=X2012 x1+x2+...+x2013=X1+X3+X5+-----+X2013+X2+X4+X6+------+X2012 =1007X1+1006X2=1006(X1+X2)+X1=1006+X1=2013 所以X1=1007 X2=1006 即 X1=X3=X5---------=X2013=1007 X2=X4=X6=--------=X2012=1006

Answer 2

[Nguyên nha hieu]

mình ko hiểu