RosettaCodeData/Task/Fibonacci-sequence/Racket/fibonacci-sequence-3.rkt
2018-06-22 20:57:24 +00:00

11 lines
243 B
Racket

#lang racket
(require math/matrix)
(define (fibmat n) (matrix-ref
(matrix-expt (matrix ([1 1]
[1 0]))
n)
1 0))
(fibmat 1000)