If and only if y/x=3x/y, the equal sign in the upper inequality holds.
So when 3x 2 = y 2 means x = (√ 3- 1)/2, y = (3-√ 3)/2.
The minimum value of 1/x+3/y is 6.
If you think you can, praise it. Thank you.
In order to help junior three students consolidate and review what they have learned in Unit 8 in time, I will sort it