<br class="Apple-interchange-newline"><div id="inner-editor"></div>A=12 +14 +18 +116 +132
CA = \(\frac{16}{32}\)+ \(\frac{8}{32}\)+ \(\frac{4}{32}\)+ \(\frac{2}{32}\)+ \(\frac{1}{32}\)
A = \(\frac{31}{32}\)
k Mk nha Mk k lại
đáp số:\(=\frac{31}{32}\)
ai k mk mk sẽ k lại @!@#$@ ủng hộ nha ^_^hãy nhấn
\(\text{Ta có: }\)\(A=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\)
\(\Rightarrow2A=1+\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\)
\(\Rightarrow2A-A=1-\frac{1}{32}\)
\(\Rightarrow A=\frac{31}{32}\)
\(A=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\)
\(=>2A=2\left(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}+\frac{1}{32}\right)\)
\(=>2A-A=\left(1+.....+\frac{1}{16}\right)-\left(\frac{1}{2}+\frac{1}{4}+....+\frac{1}{32}\right)\)
\(=>A=1-\frac{1}{32}\)
\(=>A=\frac{31}{32}\)
Ko ai chép nha
Ũng hộ nữa nha
= \(\frac{16}{32}+\frac{8}{32}+\frac{4}{32}+\frac{2}{32}+\frac{1}{32}\)
=\(\frac{31}{32}\)
\(A=\left\{\frac{1}{2}+\frac{1}{4}\right\}+\left\{\frac{1}{8}+\frac{1}{16}\right\}+\frac{1}{32}.\)
\(A=\left\{\frac{2}{4}+\frac{1}{4}\right\}+\left\{\frac{2}{16}+\frac{1}{16}\right\}+\frac{1}{32}.\)
\(A=\frac{3}{4}+\frac{3}{16}+\frac{1}{32}.\)
\(A=\frac{24}{32}+\frac{6}{32}+\frac{1}{32}\)
\(A=\frac{30}{32}+\frac{1}{32}\)
\(A=\frac{31}{32}\)
