The Functions chapter is part of the Sets, Relations, and Functions unit as per the JEE-Mains chapter-wise weightage.
This contributes a moderate weightage of about 7-8% to the overall Maths questions.
For better understanding, you can link Functions directly to other algebra topics like Relations, Inverse Trigonometric Functions, and Graphs.
- 2–3 questions are most frequently asked from the Functions chapter every year in the JEE Main exam.
- Trends from the past five years show that at least one direct formula-based question is asked every year.
Read More:
Most Important Topics in Functions for JEE Main 2026
The Functions chapter usually contributes a small but important portion of the JEE Main Maths paper, around 5–10% of the total JEE Main Physics questions. Out of 25 questions in Maths, you can expect about 1–2 easy and scoring questions from this chapter
| Topic | Expected Weightage (%) |
|---|---|
| Domain, Range, Types of Functions (One-one, Onto, Objective) | 3-4% |
| Inverse Functions | 2-3% |
| Even/Odd, Periodic Functions | 1-2% |
Read Also: High Weightage Chapters for JEE Mains 2026 Maths
Ques: Which books/resources are best for Functions in JEE Main?
Ans: The best books and sources for preparing the Functions chapter for JEE Main include:
- NCERT Mathematics Class 11 & 12 (primary)
- RD Sharma or Arihant for practice
- Previous Year JEE Main papers for exact question types
Read More: JEE Main Reduced Syllabus 2026
Functions Weightage Trend: Last 5 Years Analysis
In some years, such as 2021 and 2025, the chapter gave around 2-3 questions (7-10%), while in others, like 2022 and 2024, it was slightly lower (1-2 questions, 5-9%).
This shows that over the last five years (2021-2025), Functions (part of Sets, Relations & Functions in Mathematics) has shown a stable presence in the JEE Main exam.
| Year | Approx. Questions | % of Mathematics |
|---|---|---|
| 2021 | 2-3 | 7-10% |
| 2022 | 1-2 | 5-7% |
| 2023 | 2 | 6-8% |
| 2024 | 1-3 | 5-9% |
| 2025 | 2-3 | 7-10% |
| Year | Question Paper PDF | Solution PDF |
|---|---|---|
| 2024 | Download | Download |
| 2023 | Download | Download |
| 2022 | Download | Download |
| 2021 | Download | Download |
| 2020 | Download | Download |
Ques: What if I skip Functions for JEE Main 2026?
Ans: Skipping it may directly affect the understanding of Calculus (limits, continuity) and other topics. Additionally, it's a low-effort, high-return chapter that can give you 4-8 marks in the JEE Main 2026 exam.
Reddit & Student Insights: What Aspirants Say About Functions
A user on Reddit shared his view on the Functions chapter:
- “Functions is a tough chapter, so having difficulties in it is normal, so don't get disheartened.”
Source: Reddit
Another user quoted:
Source: Reddit
| Functions JEE Main PYQ - 1 Mock Test | Functions JEE Main PYQ - 2 Mock Test | Functions JEE Main PYQ - 3 Mock Test |
How to Prepare Functions for JEE Main 2026 (Expert Strategy)
| Aspect | Pointers |
|---|---|
| Concept Clarity First |
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| Formula & Constants List |
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| PYQs (Minimum Years to Attempt) |
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| Chapter-wise MCQs Target |
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| Last week's Revision Approach |
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Read More: Cengage Mathematics for JEE Main- Check Advantages and Disadvantages Based on Students' Reviews
Ques: Which are the must-do topics in Functions for JEE Main 2026?
Ans: The must-do topics in the Functions chapter in Mathematics for JEE Main 2026 include:
- Types of functions (one-one, onto, bijective, composite)
- Inverse functions
- Domain, range, and co-domain
- Graphs of elementary functions (modulus, greatest integer, logarithmic, exponential)
- Even-odd functions and periodic functions
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