- #1
lvlastermind
- 101
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I've been stuck on this question for awhile.
Q: Square numbers 1, 4, 9, 16, 25... are the values of the function s(n)=n^2, when n is a positive integer. The triangular numbers t(n)=(n(n+1))/2 are the numbers t(1)=1, t(2)=3, t(3)=6, t(4)=10.
Prove: For all positive integers n, s(n+1) = t(n) + t(n+1)
I've tride a lot of things and come to the conclusion that I can't get my answer by using polynomials. I think that if you subsitiute t(n)=(n(n+1))/2 into the equation and simplify to get (n+1)^2 I will be done. My problem is that I'm having troubles doing this. Any sugestions?
Q: Square numbers 1, 4, 9, 16, 25... are the values of the function s(n)=n^2, when n is a positive integer. The triangular numbers t(n)=(n(n+1))/2 are the numbers t(1)=1, t(2)=3, t(3)=6, t(4)=10.
Prove: For all positive integers n, s(n+1) = t(n) + t(n+1)
I've tride a lot of things and come to the conclusion that I can't get my answer by using polynomials. I think that if you subsitiute t(n)=(n(n+1))/2 into the equation and simplify to get (n+1)^2 I will be done. My problem is that I'm having troubles doing this. Any sugestions?