\(\frac{1}{2}A=\frac{1}{2}+\frac{3}{2^4}+\frac{4}{2^5}+...+\frac{100}{2^{101}}\)
\(A-\frac{1}{2}A=\frac{1}{2}+\frac{3}{2^3}+\frac{1}{2^4}+...+\frac{1}{2^{100}}-\frac{100}{2^{101}}\)
\(\frac{1}{2}A=\left(1-\frac{1}{2^{101}}\right)\div\frac{1}{2}-\frac{100}{2^{101}}\)
\(=\frac{2^{101}-1}{2^{100}}-\frac{100}{2^{101}}\)
\(\Rightarrow A=\frac{\left(2^{101}-1\right)}{2^{99}}-\frac{100}{2^{100}}\)
Tính tổng :
1, A = \(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+.................+\frac{1}{100}\)
2, B = \(\frac{1}{2}+\frac{2}{3}+\frac{3}{4}+....................+\frac{99}{100}\)
Tính tổng A = \(1+\frac{3}{2^3}+\frac{4}{2^4}+...+\frac{100}{2^{100}}\)
GIÚP MÌNH VỚI NHÉ, SẮP NỘP RỒI
tính tổng M=\(1+\frac{3}{2^3}+\frac{4}{2^4}+.....+\frac{100}{2^{100}}\)
giúp mình vs mình tick đúng cho
tính :A =1+\(\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
Tính A=1+\(\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+....+\frac{100}{2^{100}}\)
Tính A=\(1+\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
Tính A\(=1+\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
Tính: A= 1+\(\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
Tính A=\(1+\frac{3}{2^3}+\frac{4}{2^4}+\frac{5}{2^5}+...+\frac{100}{2^{100}}\)
