CHO A=1/2^2+1/3^2+1/4^2+...+1/100^2 va B=1/4^2+1/6^2+1/8^2+.....+1/200^2khi do A/B=...
nhanh len cac ban oi
do cac ban 1=5 ;2=10; 3=15 ;4=20 vay 5= may
e cac che giai di
1+1= ?
mak co ai biet ban tran kieu trinh thi bao cho mk biet nha
do la NY CUA MK DAY
co ban nao muon kb voi minh ko
va bay gio mik giao cho 1 cau ?
co ai ham mo khoi my không nao
va cac ban hay cha loi cau nay
1 cau be di ra cong vien choi
gap 1 ba cu cau be lay chiec dep nhem
vao ba cu hoi cau be mat hai thu do la
nhung thu gi cac ban thu doan xem ai
tra loi dung dau tien mik tich cho nhanh len
(1/2+1/3+1/4+....1/2014).x=2013/1+2012/2+...+2/2012+1/2013 tim x
ai lam dc minh cho 3 kich
thank cac ban
/x-1/+/(x-1)(x+1)/=0
tim x
giai giup minh coi cac ban
cam on
2x^2 + 0,82 =1
cac ban oi kho qua . cac ban giup minh voi nha
tim cac so nguyen x, y biet:x/4-1/y=1/2 (giai chi tiet gium nha ban!thanks!!!)
a} Tinh M : N biet M = 1/11.13 + 1/13.15 + 1/15.17 +........+1/33.35 va M = 12/11.13.15 + 12/13.15.17 + 12/15.17.19 +.....+12/31.33.35
b} Cho S = 1 - 1/2 + 1/3 -1/4 +.......+ 1/2011 - 1/2012 + 1/2013 va P = 1/1007 + 1/1008 +.......+ 1/2012 + 1/2013 . Tinh [S - P - 1]
bang tren do ;oi may tinh ko xoa duoc mong cac ban thong cam