7.1 Functions- Definition and Types of Function

Duration: 6 min

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Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: Selection Decision Table (Decision Making)
  7. Paper-1 | General Science: Physics, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: State Wise GK, GK- Current Affairs
  9. Paper-2 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
  24. Live Sessions: RSSB Live Sessions
  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a Python programming lecture that introduces the concept of functions. The instructor begins by defining a function as a group of statements executed when called. The main content is presented on a slide with a table comparing 'In-built Function Examples' and 'User Defined Function Example'. The instructor explains the syntax for defining a user-defined function using the 'def' keyword, as shown in the code snippet 'Def power(x,y):'. He demonstrates how to call this function with arguments, using the example 'power(x,y)'. The lecture then transitions to a new slide titled 'Function Types', which categorizes functions into 'In-built or pre-defined function' and 'User defined function'. Finally, a slide on 'In-built Functions' lists common functions like 'Print()', 'Len()', and 'Find()' under categories such as General, String, List, and Dictionary. The instructor uses a digital pen to write on the screen, adding annotations like 'len(Name)' and 'x=10, y=20' to illustrate the examples.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide for a Python lecture, showing the Python logo and the word 'Function'. The instructor, a man in a black polo shirt, stands in front of a digital screen. The slide defines a function as 'A group of statements which are executed when it is called.' The main content is a table with two columns: 'In-built Function Examples' and 'User Defined Function Example'. The instructor begins to explain the concept of a function, referencing the definition on the slide. He gestures towards the screen, which displays code snippets for both types of functions, including a user-defined function 'Def power(x,y):' and examples of in-built functions like 'print(len(Name))'.

  2. 2:00 – 5:00 02:00-05:00

    The instructor continues to explain the user-defined function example on the right side of the slide. He uses a digital pen to write on the screen, adding annotations to clarify the code. He writes 'len(Name)' in pink to highlight the use of the built-in len() function. He then writes 'x=10' and 'y=20' to demonstrate how to assign values to variables before calling the function. He circles the function call 'power(x,y)' and explains that this is how the function is executed. The instructor emphasizes the structure of a function, including the 'def' keyword, the function name, parameters in parentheses, and the body of the function indented below. He also points out the 'input()' function used to get user input for the two numbers.

  3. 5:00 – 5:31 05:00-05:31

    The video transitions to a new slide titled 'Function Types'. The instructor explains that in Python, there are two types of functions: 'In-built or pre-defined function' and 'User defined function', which are shown in a diagram. He then moves to the next slide, 'In-built Functions', which displays a table with functions categorized by data type: General, String, List, and Dictionary. The instructor points to the table, listing examples like 'Print()', 'Len()', 'Find()', and 'Clear()'. The video ends with the instructor saying 'Thank you' as the screen shows the 'Knowledge Gate' logo.

The lecture provides a structured introduction to Python functions, starting with a general definition and progressing to specific examples. It effectively uses a visual aid with a table to contrast built-in functions with user-defined ones, making the distinction clear. The instructor's use of a digital pen to annotate the code live enhances the learning experience by highlighting key parts of the syntax and execution flow. The lesson concludes by categorizing functions into two main types, setting the stage for further exploration of Python's built-in functionalities.

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