B. Recursion (10 Marks)1. What does it mean by recursion?(3 marks)2. To demonstrate the mechanics of recursion, a simple mathematical example iscomputing the value of the factorial function.1def factorial(n):if n == 0:2return 14else:return nfactorial (n-1)Figure B2Explain how recursion is used to design the Python implementation of a factorialfunction as shown in the code fragment of Figure B2. You can use diagram to aid yourexplanation.(5 marks)3. Give two examples where the concept of recursion is being implemented.(2 marks)

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Engineering

Computer Science

1. What does it mean by recursion?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.

Question

B. Recursion (10 Marks)
1. What does it mean by recursion?
(3 marks)
2. To demonstrate the mechanics of recursion, a simple mathematical example is
computing the value of the factorial function.
1
def factorial(n):
if n == 0:
2
return 1
4
else:
return n
factorial (n-1)
Figure B2
Explain how recursion is used to design the Python implementation of a factorial
function as shown in the code fragment of Figure B2. You can use diagram to aid your
explanation.
(5 marks)
3. Give two examples where the concept of recursion is being implemented.
(2 marks)

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