Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
#1 2008-02-15 16:39:00
- Melllyy
- Guest
Algebra
line 1: 1/2 - 1/3 = 1/6
line 2: 1/3 - 1/4 = 1/12
line 3: 1/4 - 1/5 = 1/20
Write an algerbraic expression to find the nth line
#2 2008-02-15 16:51:49
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: Algebra
line N: (1/(1+N)) - (1/(2+N)) = 1/((1.5+N)^2-(1/4))
igloo myrtilles fourmis
Offline
#3 2008-02-15 16:58:59
- JohnnyReinB
- Member
- Registered: 2007-10-08
- Posts: 453
Re: Algebra
How 'bout:
Line n: 1/(n+1) - 1/(n+2) = 1/(n+1)(n+2)
= 1/(n^2+3n+2)
"There is not a difference between an in-law and an outlaw, except maybe that an outlaw is wanted" 
Nisi Quam Primum, Nequequam
Offline