Với $xy(x+y) \leq 1$ tìm max $A=x+4y$
Edited by nguyetnguyet829, 18-09-2023 - 20:19.
Với $xy(x+y) \leq 1$ tìm max $A=x+4y$
Started By nguyetnguyet829, 18-09-2023 - 20:19
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