CMR = $ frac{1}{1.2}$+$ frac{1}{3.4}$+$ frac{1}{5.6}$+...+$ frac{1}{49.50}$ = $ frac{1}{26}$ + $ frac{1}{27}$+....+$ frac{1}{50}$

Question

CMR =  $ frac{1}{1.2}$+$ frac{1}{3.4}$+$ frac{1}{5.6}$+...+$ frac{1}{49.50}$ = $ frac{1}{26}$ + $ frac{1}{27}$+....+$ frac{1}{50}$

khanhngan · Answer

`VT=1-1/2+1/3-1/4+...+1/49-1/50`   `=(1+1/2+1/3+...+1/50)-2(1/2+1/4+...+1/50)`   `=1+1/2+1/3+...+1/50-1-1/2-...-1/25`   `=1/26+1/27+...+1/50=VP`

CMR = $\frac{1}{1.2}$+$\frac{1}{3.4}$+$\frac{1}{5.6}$+…+$\frac{1}{49.50}$ = $\frac{1}{26}$ + $\frac{1}{27}$+….+$\frac{1}{50}$