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
1+1/2+1/4+1/8+...+1/1024
tính nhanh ;
1234.5678.(630 -315) :1996
319.45+ 55.319 /1995.1996 -1991.1995
1988.1996+1997.11+1985 /1997.1996-1995.1996
(1+2+4+8+.....+512) .(101.102-101.101-50-51) /2+4+6+8+16+....+1024+2048
(1+2+4+8+....+512).(135135.246-246246.135)/2+4+8+16+....+1024+2048
1/2-1/4-1/8-....-1/1024
a=1/2-1/4+1/8-...-1/1024
1/2 - 1/4 - 1/8 - .... - 1/1024 tính
1/2+1/4+1/8+...+1/512+1/1024
\(\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{1}{8}+...+\dfrac{1}{1024}\)
C=1/2+1/4+1/8+1/16+...+1/1024