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# Prove sqrt(xy) is less than or equal to (x+y)/2 for all positive values of x and y watch

1. (Original post by DFranklin)
Now you've been warned, I'll report further full solutions for removal.
Cheers g
2. (Original post by dhxrt)
Oh I wasn’t aware and what’s the reason for that?
It's explained further in post 3 of this thread. Essentially, it helps the student understand the method much better and be able to apply it another time if they have been guided to the answer rather than just given the answer to the exact question they have at this point
3. (Original post by Lemur14)
It's explained further in post 3 of this thread. Essentially, it helps the student understand the method much better and be able to apply it another time if they have been guided to the answer rather than just given the answer to the exact question they have at this point
Ty for letting me know and not being a ***** about it aha
4. (Original post by dhxrt)
Ty for letting me know and not being a ***** about it aha
No worries
5. This is a two mark question, are you sure there is no easier way?
6. This is quite the popular AM-GM inequality. A way to prove this is by contradiction (use the trivial inequality),

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