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2.1

What a function is

Your guide: Sir AhmedSays brackets have saved more marks than any calculator.

The idea

A function sends each input to exactly one output. One input, one output.

Name the chapter before you answer.

Step 1 / 7

Notes, short questions and MCQs

Read the full notes: key terms, model answers and MCQs with answers

The idea

A function sends each input to exactly one output. One input, one output.

Name the chapter before you answer.

Key terms

What a function is
A function sends each input to exactly one output. One input, one output.

Short questions with model answers

  1. Q1. What is this section about?

    • A function sends each input to exactly one output. One input, one output.

    What a function is

Common mistakes

  • ✗ Answering without naming the chapter.

    ✓ Name it first.

MCQs

  1. 1. This section is

    1. (a) What a function is
    2. (b) A copied page
    3. (c) An empty chapter
    Show answer

    (a) The title comes from the book contents.

Quick revision

  • A function sends each input to exactly one output. One input, one output.

Before you start

What is 1st Year Maths What a function is?
What a function is is the open 1st Year Maths lesson for FSc Part 1, Punjab board. It is a step-by-step lesson, not a PDF of the book.
Which boards is this 1st Year Maths lesson for?
The same Punjab textbook: Lahore, Rawalpindi, Gujranwala, Faisalabad, Multan, Sargodha, Bahawalpur, Dera Ghazi Khan, Sahiwal.
Can I study this in Urdu?
Yes. English, Urdu or Roman Urdu. Science terms stay as the exam writes them.
Is this a notes PDF?
No. The book stays with you. This page is the lesson and the check.

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