Các câu hỏi tương tự
lam vay co duoc ko
1/2+1/4+1/8+... +1/512+1/1024=1-1/2+1/2-1/4+...+1/512-1/1024=1-1/1024=1/1023
Tính :
A= 1+1/2+1/4+1/8+...+1/1024
A = 1/2-1/4+1/8-1/16+1/32-................-1/1024+1/2048
A=1/2+1/2^2+1/2^3+...+1/2^100
B=1/2+1/4+1/8+...+1/1024
Tính tổng:
A=(1-1/2)+(1-1/4)+(1-1/8)+...+(1-1/512)+(1+1/1024)
1+1/2+1/4+1/8+...+1/1024
TÍNH NHANH
a) A= 1 . 2 + 2 . 3 + 3 .4 +...+ 98 . 97
b) B= 1 + 1/2 + 1/4 + 1/8 +...+ 1/1024
1+2+1+2+4+8+........+1024
1/2-1/4-1/8-....-1/1024