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

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GuidelinesThis is the Formula Resource. If you have a formula to contribute, please find the right category and then add to it. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman 