Need some formula to do the competition well tomorrow?
Hello, I'm Diem from Vietnam, i'm 14 and i need your help.
I'll have a Doing-Math-By-Using-Casio-Caculator competition tomorrow and i'm afraid now because i don't have a well-preparation.
So i very need you. I want you to give me some formulas to do that quickly and exactly.
That's something about Trigonometry, arithmetic, algebra or everything you know
Thank you very much