Tính

1) \(512-\frac{512}{2}-\frac{512}{2^2}-\frac{512}{2^3}-...-\frac{512}{2^{10}}\)

2) \(\frac{1}{3}-\frac{1}{8}-\frac{1}{54}-\frac{1}{108}-\frac{1}{180}-\frac{1}{270}-\frac{1}{378}\)

3)\(3-3^2+3^3-3^4+....+3^{2015}-3^{2016}\)

Bai 1: Rut gon bieu thuc sau 

B=(2/3)^3×(-3/4)^4×(-1)^5/(2/5)^2 × (-5/12)^3

Bai 2: Tim ia tri bieu thuc sau

M= 512- 512/2- 512/2^2- 512/2^2 - 512/2^3...512/2^10

tính: A=1/6-1/39+1/51 / 1/8-1/52+1/68 B=512-512/2-512/2^2-512/2^3-...-512/2^10

Tính

A= 512 - 512/2 - 512/2^2 - 512/2^3 - ....- 512/210

E= 1 - 1/10 - 1/15 - 1/3 - 1/28 - 1/6 - 1/21

C= 11/1.3 + 47/3.5 + 107/5.7 + 191/7.9 +...+ 971/17.19

tính      A=1/6-1/39+1/51   /  1/8-1/52+1/68    ;     B= 512-512/2-512/2^2-212/2^3-...-512/2^10

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

a/ 3/5x7 +3/7x9 +....+3/59x61

b/ 1+1/2+1/4+1/8+1/16+....+1/512+1/1024

C=3/2+3/4+3/8+3/16+...+3/128

D=1/2+1/4+1/8+...+1/1024

E=5/2+5/8+5/32+5/128+5/512+5/2048

(2 + 4 + 6 + ... + 98) x (\(\dfrac{3}{4}\) x 8 - 15 x 0,4) x (\(\dfrac{1}{2}\) + \(\dfrac{1}{4}\) + \(\dfrac{1}{8}\) + ... + \(\dfrac{1}{512}\) )
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