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

You are not logged in. #1 20091011 21:02:24
Arithmetic Progression sumTry solving these: "Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"  David O. McKay #2 20091012 08:41:01
Re: Arithmetic Progression sumHi soha; Where Sn = sum to n terms n is the number of terms d = constant difference s1= first term a) Formula: b) c) s2 = 2 and s4 = 8 Add them both up and divide by 2 to get 5. This gives you a constant term of 3 (52 = 3 , 8  5 = 3) The sequence is: 1,2,5,8,11... Glad to help ya!!! Last edited by bobbym (20091012 09:08:21) In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20091012 18:48:03
Re: Arithmetic Progression sumYippee!!!! Right!!! "Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"  David O. McKay 