Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

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You're such a nice person!
You noticed, and were curious about, the algebra. You write well, too.
Thank you.....but how do you know....?
You're doing well!
I'm only thirteen!
Depends on where you live. Some countries start Calculus in the final year of high school.
How old are you expected to be to be at that standard?
The difficult kind ! It has calculus in it.
Um...what kind of algebra is that?
A bit outside my area, but I found a website that has ALL sorts of stuff about harmonic motion which could help here
Can anyone give me a hand with this, cause I'm stumped and can't remember exactly how to go about solving this. 