Question

tinh 2/2*4 + 2/4*6 + 2/6*8 + ......... 2/2014*2016 = ( viet ket qua duoi dan phan so toi gian) ket qua la 1007/2016 viet cach lam ra ho minh nhe 

Answer 1

Ta co : 2/2*4+2/4*6+2/6*8+.....+2/2014*2016

         =1/2-1/4+1/4-1/6+1/6-1/8...+1/2014-1/2016

         =1/2-1/2016=1007/2016

Answer 2

2/2 x 4 + 2/2 x 6 +2/6 x 8 + ...................... +2/2014 x 2016

=2/2 - 2/4 +2/2 -2/6 + 2/6 +2/8 + .................+2/2014 - 2/2016

rut gon ta duoc con lai: 2/2-2/2016

=1-1/1008

=1007/1008

tk minh nha

chuc ban hoc tot

happy valentine's day

Answer 3

dap an cua ban sai roi do dap an la 1007/1008

Answer 4

hjyuiu