next=.0 3+*&5
20 next@]^:(i.@[) 1 0
Or,
next=.5&(0 3 + *)
(i. 20) next 1 0
Henry Rich
On 12/19/2012 6:46 AM, alessandro codenotti wrote:
I have a sequence defined as:
S(1)=K
S(n+1)=3+5*S(n)
where K is an integer constant
so the first 4 terms of this sequence (in function of K) are:
S(1)=K
S(2)=5K+3
S(3)=25K+18
s(4)=125K+93
representing every term with an array where the first element is the coefficent
of K and the second is the other part is trivial to write the following verb to
find the next term of the sequence:
next=.0 3+*&5
next 1 0
5 3
next 5 3
25 18
next 25 18
125 93
but i have a problem writing a functions that returns an array of shape equals
to N 2 where the n-th row contain the 2 coefficents of the n-th term of the
sequence, can anyone help me doing that?
Thank in advice!
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