Tìm MAX của $A=\left ( a+b \right )\left ( \frac{1}{a^3+b}+\frac{1}{a+b^3}\right )-\frac{1}{ab}$ với $a,b>0$
Edited by The Flash, 01-08-2017 - 19:39.
Tìm MAX của $A=\left ( a+b \right )\left ( \frac{1}{a^2+b}+\frac{1}{a+b^2}\right )-\frac{1}{ab}$
Started By The Flash, 31-07-2017 - 19:47
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