There's no easy way to simplify that unless you're willing to use hypergeometric/subfactorial/etc. functions.How do I simplify
Not sure if this is ext 2, just doing an applied maths problem
Let the sum be XHow do I simplify
Not sure if this is ext 2, just doing an applied maths problem
I don't think it works.Let the sum be X
Observe nX = n! + X -1
Then solve for X
whoops XDI don't think it works.
This is not a GS.
nX = n! + n (n-2)! + n (n-3)! + ......