User Defined Functions Write a Python based user defined functions for each of the following questions 4- Recursive Function . Write a recursive function to find a Fibonacci number Fibonacci number https://en.wikipedia.org/wiki/Fibonacci number Fibonacci numbers, commonly denoted F, form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from o and 1 fn = fn-1 + fn-2; fo = 0, f1 = 1 What is f1o = ? 820 =