Chapter 5 of 27
Revision Notes
Matrices — Revision Notes
J&K CET · Mathematics
Free Matrices revision notes for J&K CET Mathematics 2026 — key concepts, formulas, and definitions for quick revision.
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Key concepts, formulas, and definitions from Matrices for J&K CET Mathematics preparation.
Key Topics to Revise
1
Matrix Basics and Types
- A matrix is an ordered rectangular array of numbers or functions arranged in rows and columns
- Order of matrix: m×n means m rows and n columns
- Matrix notation: A = [aᵢⱼ]ₘₓₙ where aᵢⱼ represents element in ith row and jth column
2
Matrix Operations - Addition and Subtraction
- Matrix addition/subtraction is only possible for matrices of same order
- Operations are performed element-wise
- Addition is commutative and associative
3
Scalar Multiplication and Matrix Multiplication
- Scalar multiplication: multiply every element by the scalar
- Matrix multiplication: only possible when columns of first = rows of second
- Matrix multiplication is NOT commutative in general
4
Transpose of Matrix
- Transpose: rows become columns and columns become rows
- Order changes from m×n to n×m
- Transpose of transpose gives original matrix
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Key Concepts
A matrix is an ordered rectangularRow MatrixTwo matrices can be addedWhen a matrix A is multipliedTwo matrices A (m×n) and B
Frequently Asked Questions
What topics are covered in Matrices for J&K CET?
Matrices is an important chapter in J&K CET Mathematics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Matrix Basics and Types, Matrix Operations - Addition and Subtraction, Scalar Multiplication and Matrix Multiplication, Transpose of Matrix.
How important is Matrices for J&K CET?
Matrices is a frequently tested chapter in J&K CET Mathematics. Questions from this chapter appear regularly in previous year papers. There are 321 practice questions available for this chapter.
How to prepare Matrices for J&K CET?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
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