Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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I think it sometimes goes like this:
Where did you learn maths Old_dad?
My dad teaches maths in a secondary school (in the UK) yet he knows nothing about mathematics!!!
Thanks to all.
Yeah, just had to multiply above and below by cos x and we would have had it.
Dad was soooo close!
Can seem to remember how to prove the following identity