a^2+a*(100a^2-a^4)^1/2
->
2a+1/2*(100a^2-a^4)^-1/2*200a-4a^3
I wish I could have known about the view from halfway down
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I wish I could have known about the view from halfway down
I wish I could have known about the view from halfway down
). Megkapod az optimális a-t. Utána pedig kiszámolod vele azt a mértani középértéket, amit kérdez a feladat. 
Serbia is like Nokia: each year a new model, and it's getting smaller.

I wish I could have known about the view from halfway down