https://teams.microsoft.com/l/meetup-join/19%3aab774946768b4fac9f57546adc5b800a%40thread.tacv2/1639985768335?context=%7b%22Tid%22%3a%2297ddd709-75b9-4be5-8a61-39f2030afc03%22%2c%22Oid%22%3a%22b19fcbeb-18f0-4e63-a0ae-892027c205e4%22%7d
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Ap dung bdt Holder ta co
\(VP=\left(a^3+b^3+0^3\right)\left(b^3+y^3+0^3\right)\left(c^3+z^3+0^3\right)\ge\left(abc+xyz+0\right)^3=VT\)
P/s: Day la 1 he qua quen thuoc cua bdt Holder
Đặt A = \(1\frac{1}{6}+1\frac{1}{12}+1\frac{1}{20}+1\frac{1}{30}+...+1\frac{1}{9900}\)
=> A = \(1+\frac{1}{6}+1+\frac{1}{12}+1+\frac{1}{20}+1+\frac{1}{30}+...+1+\frac{1}{9900}\)
=> A = \(\left(1+1+1+1+...+1\right)+\left(\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+\frac{1}{30}+...+\frac{1}{9900}\right)\)
=> A = \(\left(1+1+1+1+...+1\right)+\left(\frac{1}{2.3}+\frac{1}{3.4}+\frac{1}{4.5}+\frac{1}{5.6}+...+\frac{1}{99.100}\right)\)
=> A = \(99+\left(\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+\frac{1}{5}-\frac{1}{6}+...+\frac{1}{99}-\frac{1}{100}\right)\)
=> A = \(99+\left(\frac{1}{2}-\frac{1}{100}\right)\)
=> A = \(99+\frac{49}{100}\)
=> A = \(\frac{9949}{100}\)
cái j thế
link gg meet à ?
chả có ai trong phòng cả