perplexus.info :: Just Math : Closed Closure

Closed Closure (Posted on 2011-04-28)

Determine, with proof, the closed form of following expression in terms of n

Σ_{j=1 to n} j²*(j+1)*(ⁿC_j)

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

The required closed form of the following expression is as follows:

2^n-3n(n² + 5n + 2)

For a detailed explanation, refer to the solution submitted by Harry in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution	Harry	2011-04-29 23:34:28
The closed form	broll	2011-04-29 06:32:58
here are some numbers in case they help	Charlie	2011-04-28 11:44:18

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