\(\left(0+1+2+3+...\right)-\left(1+2+3+...\right)\)
\(=0+\left(1+2+3+...\right)-\left(1+2+3+...\right)\)
\(=0\)
\(\left(0+1+2+3+...\right)-\left(1+2+3+...\right)\)
\(=0+\left(1+2+3+...\right)-\left(1+2+3+...\right)\)
\(=0\)
tinh phep tinh sau ;
(1/2+1/3+1/6)+(999998*0*7654)
Khong lam phep tinh hay so sanh:
a.[-1]*[-2]*[-3]*...*[-2009] voi 0
b.[-1]*[-2]*[-3]*...*[-10] voi 1*2*3*...*9*10
Cac ban hay tinh cho toi mot bai toan nhu sau
Chung to phep tinh chia het cho 3
1+2+22+23+...+22008
hay viet cac phep tinh sau thanh not day tinh gop chang han 5-2=3;10-3=7 viet thanh 10-(5-2)
a) 27+38=65
80-65=15
dau hieu chia het cho 2 la gi ?
lam phep tinh sau :|x-3|=0
Cho A=3.(22+1).(24+1).(28+1).(216+1)
Khong lam phep tinh hay rut gon bieu thucroi tim cs tan cung
thuc hien cac phep tinh sau 1 cach hop ly (3.4.2^16)^2/11.2^13.4^11-16^0
Khong thuc hien phep tinh de tim ket qua. Hay chung minh rang cac tong sau lon hon 1
M = \(\frac{3}{7}+\frac{3}{8}+\frac{3}{10}\)
22 *32 = ?
hay tinh phep tinh tren
ai nhanh thi duoc diem hoi dap