TN 12th Supplementary 2026 Maths exam is on June 26, 2026 — with 15 days left, focusing revision on the highest-weightage chapters is the fastest way to clear the paper.
The Directorate of Government Examinations (DGE), Tamil Nadu conducts the Class 12 Supplementary exam for students who need to clear or improve a subject score. The Maths paper covers 12 chapters across two volumes, but chapters on Calculus, Analytical Geometry, Vector Algebra, and Probability consistently attract the most questions. Targeting these chapters first before moving to medium- and low-weightage topics gives you the best return on every hour of revision.
- Exam date: June 26, 2026
- Conducting body: Directorate of Government Examinations (DGE), Tamil Nadu
- High-priority chapters: Applications of Integration (Ch. 9), Two-Dimensional Analytical Geometry – II (Ch. 5), Applications of Vector Algebra (Ch. 6), Probability Distributions (Ch. 11), Matrices and Determinants (Ch. 1)
- Low-priority chapters: Inverse Trigonometric Functions (Ch. 4), Differentials and Partial Derivatives (Ch. 8), Discrete Mathematics (Ch. 12)
- Official portal: dge.tn.gov.in
| Direct Link to DGE Tamil Nadu Official Website | dge.tn.gov.in |
TN 12th Maths Chapter-Wise Weightage 2026
The table below shows each chapter’s priority level and the question parts it typically appears in, based on previous year TN 12th public and supplementary exam paper trends.
| Ch. No. | Chapter Name | Volume | Typical Question Parts | Priority |
|---|---|---|---|---|
| 1 | Applications of Matrices and Determinants | Vol. 1 | MCQ, 3-mark, 5-mark | High |
| 2 | Complex Numbers | Vol. 1 | MCQ, 2-mark, 3-mark | Medium |
| 3 | Theory of Equations | Vol. 1 | MCQ, 2-mark, 3-mark | Medium |
| 4 | Inverse Trigonometric Functions | Vol. 1 | MCQ, 2-mark | Low |
| 5 | Two-Dimensional Analytical Geometry – II | Vol. 1 | MCQ, 3-mark, 5-mark | High |
| 6 | Applications of Vector Algebra | Vol. 2 | MCQ, 3-mark, 5-mark | High |
| 7 | Applications of Differential Calculus | Vol. 2 | MCQ, 3-mark, 5-mark | High |
| 8 | Differentials and Partial Derivatives | Vol. 2 | MCQ, 2-mark | Low |
| 9 | Applications of Integration | Vol. 2 | MCQ, 3-mark, 5-mark | High |
| 10 | Ordinary Differential Equations | Vol. 2 | MCQ, 2-mark, 3-mark | Medium |
| 11 | Probability Distributions | Vol. 2 | MCQ, 3-mark, 5-mark | High |
| 12 | Discrete Mathematics | Vol. 2 | MCQ, 2-mark | Low |
Top High-Weightage Chapters to Revise First
Five chapters appear across the MCQ, 3-mark, and 5-mark sections in almost every TN 12th Maths paper. Covering these first maximises your score before you spend time on medium- and low-priority chapters.
Chapter 9: Applications of Integration
This is the most frequently tested chapter in the 5-mark section based on previous year paper trends. Definite integrals using properties, area bounded by curves (between a curve and an axis, or between two curves), and volume of solids of revolution are the three sub-topics to master. Set up each problem by drawing the region and identifying the correct limits before integrating — mistakes in limits are the most common source of lost marks here.
Chapter 5: Two-Dimensional Analytical Geometry – II
Parabola, ellipse, and hyperbola problems appear consistently in both the 3-mark and 5-mark sections. Know the standard equations, foci, directrix, and latus rectum for each conic. A 5-mark problem asking for the equation of a conic given specific conditions is typical in Part IV. Practise parabola and ellipse problems first as they appear more frequently than hyperbola.
Chapter 6: Applications of Vector Algebra
Scalar triple product, vector triple product, equations of lines and planes in 3D, angle between two planes, and the shortest distance between skew lines are the recurring topics. Part IV regularly carries a 5-mark vector geometry problem. Work through at least five previous year Part IV questions from this chapter before the exam.
Chapter 11: Probability Distributions
Binomial and Poisson distributions are formula-driven and directly scoreable. Memorise: mean = np and variance = npq for binomial; mean = variance = ? for Poisson. Most questions ask you to calculate probabilities, mean, or variance given standard parameters — these are direct substitutions that take under five minutes to solve once the formulas are memorised. This chapter has one of the best effort-to-marks ratios for last-minute revision.
Chapter 1: Applications of Matrices and Determinants
Rank of a matrix by row reduction (echelon form), applying Cramer’s rule to 3×3 systems, and determining whether a system is consistent or inconsistent are the core exam topics. A 5-mark question on solving a system of linear equations is typical in Part IV. Practice at least three full 3-variable systems using Cramer’s rule to build speed and accuracy.
Must-Revise Topics in Each Chapter
The table below narrows each chapter to the specific sub-topics tested most often in TN 12th Maths previous year public and supplementary papers. Use this as your final revision checklist.
| Chapter | Must-Revise Topics |
|---|---|
| Ch. 1 – Matrices and Determinants | Rank by row reduction to echelon form; Cramer’s rule for 3×3 systems; consistency of equations; inverse via elementary row operations |
| Ch. 2 – Complex Numbers | Modulus-argument (polar) form; De Moivre’s theorem; nth roots of unity; locus of a complex number |
| Ch. 3 – Theory of Equations | Relationship between roots and coefficients; reciprocal equations; nature of roots using discriminant; Descartes’ rule of signs |
| Ch. 4 – Inverse Trigonometric Functions | Domain and range of inverse trig functions; principal values; basic identities (for MCQ only) |
| Ch. 5 – Analytical Geometry II | Standard equations of parabola, ellipse, hyperbola; tangent and normal equations; finding equation of conic from given conditions |
| Ch. 6 – Vector Algebra | Scalar and vector triple products; vector equations of lines and planes; shortest distance between skew lines; angle between two planes |
| Ch. 7 – Differential Calculus | Absolute and local maxima-minima (first and second derivative tests); Rolle’s theorem; Mean Value theorem; L’Hôpital’s rule |
| Ch. 8 – Differentials and Partial Derivatives | Linear approximation; differentials; partial derivatives of two-variable functions (for MCQ and 2-mark) |
| Ch. 9 – Applications of Integration | Area under a curve; area between two curves; volume of revolution around x-axis and y-axis; definite integral properties |
| Ch. 10 – Differential Equations | Variable separable method; homogeneous equations; linear first-order ODEs using integrating factor; formation of ODEs |
| Ch. 11 – Probability Distributions | Binomial distribution (mean np, variance npq); Poisson distribution (mean = variance = ?); normal distribution basics for MCQ |
| Ch. 12 – Discrete Mathematics | Boolean algebra; logic gates; truth tables; switching circuits (MCQ and 2-mark only) |
15-Day Revision Schedule for TN 12th Supplementary Maths 2026
The exam is on June 26, 2026 — 15 days from today (June 11). The schedule below covers every high-weightage chapter with time for full paper practice and a final formula review day.
| Days | Chapter or Activity | Daily Target |
|---|---|---|
| Days 1–3 | Ch. 9 – Applications of Integration | 10 definite integral problems per day; 5 area-under-curve and 3 volume problems on Day 3 |
| Days 4–5 | Ch. 11 – Probability Distributions | Memorise all formulas on Day 4; solve 10 binomial and 10 Poisson problems on Day 5 |
| Days 6–7 | Ch. 5 – Analytical Geometry II | Derive all standard conic equations from memory each day; 5 tangent-normal problems per day |
| Days 8–9 | Ch. 6 – Applications of Vector Algebra | 5 triple product problems and 5 line-plane problems daily from previous year papers |
| Days 10–11 | Ch. 1 and Ch. 7 | 5 matrix-system problems using Cramer’s rule; 5 maxima-minima problems with theorem application |
| Days 12–13 | Full previous year supplementary papers (timed) | One complete paper per day under 3-hour conditions; review all errors immediately after |
| Day 14 | Formula and theorem revision | Write all key formulas from memory without notes; mark and re-learn anything missed |
| Day 15 | Light revision only | Scan your formula sheet once; rest well — do not attempt new problems the night before the exam |
The MCQ section carries marks with no negative marking — attempt every single MCQ without leaving any blank. Practising 30–40 MCQs from previous year papers over the last three days builds the pace to finish Part I quickly and preserve time for the longer-answer sections.
TN 12th Supplementary Maths 2026 FAQs
Ques. Which is the most important chapter for TN 12th Supplementary Maths 2026?
Ans. Applications of Integration (Chapter 9) is the highest-weightage chapter based on previous year question paper trends. It appears in the MCQ, 3-mark, and 5-mark sections. Definite integrals, area under a curve, and volume of revolution are the three most tested sub-topics.
Ques. How many chapters are in TN 12th Maths and which carry the most marks?
Ans. TN 12th Maths has 12 chapters across two volumes. The highest-weightage chapters based on previous year trends are Applications of Integration (Ch. 9), Analytical Geometry – II (Ch. 5), Vector Algebra (Ch. 6), Probability Distributions (Ch. 11), and Matrices and Determinants (Ch. 1). Each of these typically appears in the 5-mark section (Part IV).
Ques. Which chapters should I cover last if my revision time is very limited?
Ans. Inverse Trigonometric Functions (Ch. 4), Differentials and Partial Derivatives (Ch. 8), and Discrete Mathematics (Ch. 12) carry the lowest weightage — they typically appear only in MCQ and 2-mark sections. Revise these after completing the five high-priority chapters.
Ques. Is there negative marking in TN 12th Supplementary Maths?
Ans. No, there is no negative marking in TN 12th Maths. Attempt every MCQ without skipping. Even if you are unsure, eliminating clearly wrong options improves your chances of selecting the correct answer.
Ques. How can I prepare Probability Distributions in just two days?
Ans. Spend Day 1 memorising the binomial distribution formulas (mean = np, variance = npq) and Poisson distribution formulas (mean = variance = ?). On Day 2, solve 10–15 standard problems from previous year papers. Most Probability Distribution questions are direct formula applications — knowing the formulas is the main requirement for this chapter.
Ques. Where can I find the TN 12th Supplementary 2026 exam timetable and admit card?
Ans. The official TN 12th Supplementary 2026 exam timetable and admit card download link are available on the DGE Tamil Nadu official website at dge.tn.gov.in. Check the site regularly for any updates to the schedule.
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