\(\frac{1}{2}-\frac{1}{4}-\frac{1}{8}-...-\frac{1}{1024}=\frac{1}{1024}\)dùng phương pháp loại trừ
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tính \(-1-\frac{1}{2}-\frac{1}{4}-\frac{1}{8}-......-\frac{1}{1024}\)
Tính A= \(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...........+\frac{1}{512}+\frac{1}{1024}\)
Tính nhanh :
\(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+...+\frac{1}{512}+\frac{1}{1024}\)
Tính: \(M=\frac{1}{2}+\frac{2}{4}+\frac{3}{8}+\frac{4}{16}+\frac{5}{32}+...+\frac{10}{1024}\)
\(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...+\frac{1}{1024}\)
C = \(\left(\frac{1}{2}-1\right)+\left(1-\frac{3}{4}\right)+\left(\frac{7}{8}-1\right)+......+\left(1-\frac{1023}{1024}\right)\) ) . tính c
Tính nhanh tổng sau:
\(A=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}+\frac{1}{64}+\frac{1}{128}+\frac{1}{256}+\frac{1}{512}+\frac{1}{1024}\)
\(\left(1-\frac{1}{2}\right)+\left(1-\frac{1}{4}\right)+\left(1-\frac{1}{8}\right)+....+\left(1-\frac{1}{512}\right)+\left(1-\frac{1}{1024}\right)\)
1. Thực hiện phép tínha) A left(frac{1}{2}-1right).left(frac{1}{3}-1right).left(frac{1}{4}-1right).....left(frac{1}{1963}-1right)b) B frac{frac{3}{5}+frac{3}{7}-frac{3}{11}}{frac{4}{5}+frac{4}{7}-frac{4}{11}}:frac{3}{4}c) C frac{1}{2.5}+frac{1}{5.8}+frac{1}{8.11}+...+frac{1}{152.155}d) D 1+frac{1}{2}+frac{1}{4}+frac{1}{8}+...+frac{1}{1024}
Đọc tiếp
1. Thực hiện phép tính
a) A = \(\left(\frac{1}{2}-1\right).\left(\frac{1}{3}-1\right).\left(\frac{1}{4}-1\right).....\left(\frac{1}{1963}-1\right)\)
b) B = \(\frac{\frac{3}{5}+\frac{3}{7}-\frac{3}{11}}{\frac{4}{5}+\frac{4}{7}-\frac{4}{11}}:\frac{3}{4}\)
c) C = \(\frac{1}{2.5}+\frac{1}{5.8}+\frac{1}{8.11}+...+\frac{1}{152.155}\)
d) D = \(1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+...+\frac{1}{1024}\)