Introduction:
The JEE Main exam is a highly competitive entrance exam for admission to engineering colleges in India. The mathematics section of the JEE Main exam covers a wide range of topics, including matrices and determinants. In this response, we will discuss whether you can expect questions from matrices and determinants in the mathematics section of the JEE Main exam.

Matrices in JEE Main:
- Matrices are an important topic in linear algebra, and they often appear in the mathematics section of the JEE Main exam.
- Questions related to matrices can cover various concepts, such as matrix operations (addition, subtraction, multiplication), finding the inverse of a matrix, solving systems of linear equations using matrices, and finding the rank of a matrix.
- It is important to have a good understanding of matrix properties, such as transpose, adjoint, and determinant, as they are often tested in JEE Main questions.

Determinants in JEE Main:
- Determinants are closely related to matrices and are another important topic in the mathematics section of the JEE Main exam.
- Questions on determinants can cover topics such as finding the value of a determinant, solving systems of linear equations using determinants, and properties of determinants (such as expansion by minors and Cramer's rule).
- It is crucial to understand the properties and rules of determinants, as they are frequently tested in JEE Main questions.

Sample Questions:
1. Find the inverse of the matrix A = [1 2; 3 4].
2. Solve the system of equations using determinants:
2x + 3y = 7
4x - 2y = 10
3. Find the determinant of the matrix B = [2 1 3; 4 5 6; 7 8 9].
4. Find the rank of the matrix C = [1 2 3; 2 4 6; 3 6 9].

Preparation Tips:
To prepare for questions on matrices and determinants in the JEE Main exam, consider the following tips:
- Understand the basic concepts and properties of matrices and determinants.
- Practice solving questions from previous years' JEE Main papers and sample papers to familiarize yourself with the types of questions that can be asked.
- Review the formulas and rules related to matrices and determinants regularly.
- Work on your problem-solving skills by attempting different types of questions and analyzing your mistakes.
- Seek guidance from teachers, coaching institutes, or online platforms like EduRev, which provide comprehensive study materials and practice questions for JEE Main preparation.

Conclusion:
In the mathematics section of the JEE Main exam, questions from matrices and determinants are frequently asked. It is important to have a thorough understanding of matrix operations, properties, and determinants to perform well in this section. Regular practice and revision of concepts, along with solving previous years' question papers, can help you prepare effectively for these topics.