so sanh:A=(1+5+5^2+..+5^9/)1+5+5^2+...+5^8)voi B=1+3+3^2+..+3^9/1+3+3^2+..+3^9
so sanh:A=(1+5+5^2+..+5^9/)1+5+5^2+...+5^8)voi B=1+3+3^2+..+3^9/1+3+3^2+..+3^9
neu them vao so bi chia 1/2 gia tri cua no va bot di 0,,5 gia tri thi thuong moi so voi thuong voi phep tinh thay doi so.....lam
Cho A=3.(22+1).(24+1).(28+1).(216+1)
Khong lam phep tinh hay rut gon bieu thucroi tim cs tan cung
Voi sau chu so 3 va dau ngoac, dau phep tinh va so mu. Hay viet thanh bieu thuc co gia tri 106 bang 3 cach.
hay so sanh m voi 1
M=\(\frac{1}{2!}+\frac{2}{3!}++......+\frac{9}{10!}\)
cac ban giup toi cau nay voi:
Thuc hien phep tinh(hop ly neu co the):
(10/99+11/199-12/299)x(1/2-1/3+-1/6)
mong cac ban giup minh nhanh voi a. Minh xin cam on
cho M= 1/12+1/22+1/32+....+1/102. hay so sanh M voi 1^1/3
ban An lam phep tinh tru trong do SBT la so co 3 chu so ,ST la so gom chinh 3 chu so ay viet theo thu tu nguoc lai .An tinh duoc ket qua =188. Hay chung to An tinh sai
Giup minh voi nhe