code: def nth_fibonacci_6(n):
      res = [[1, 1], [1, 0]]
  
      matrix_pow(res, n + 1)
  
      return res[1][1]
  
file_path: coding-problems/Other/nth_fibonacci_number.py
imports: import math
label_desc: Use image node_id 7 for calling a global function with example usage: nth_fibonacci_6(n) and returns: res