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Coda · Posted 04-04-2017, 08:45 PM

A closed form is a simple equation that directly describes any element of a sequence without having to reference any other element or evaluate a sum.

For example, the closed form of f(n) = 1 + 2 + ... + n is f(n) = n(n+1)/2.

That answer you got doesn't make sense... Why would it ever write "1 - 1/3" instead of just "2/3"? There has to be an n in there somewhere... Maybe it's "1 - (1/3)ⁿ"?

		#300	Coda Developer
A closed form is a simple equation that directly describes any element of a sequence without having to reference any other element or evaluate a sum. For example, the closed form of f(n) = 1 + 2 + ... + n is f(n) = n(n+1)/2. That answer you got doesn't make sense... Why would it ever write "1 - 1/3" instead of just "2/3"? There has to be an n in there somewhere... Maybe it's "1 - (1/3)ⁿ"? Games by Coda (updated 4/8/2025 - New game: Marianas Miner) Art by Coda (updated 8/25/2022 - beatBitten and All-Nighter Simulator) Mega Man: The Light of Will (Mega Man / Green Lantern crossover: In the lead-up to the events of Mega Man 2, Dr. Wily has discovered emotional light technology. How will his creations change how humankind thinks about artificial intelligence? Sadly abandoned. Sufficient Velocity x-post)
	Posted 04-04-2017, 08:45 PM