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Mathematics Notes for Class 12 chapter 3. Matrices A matrix is a rectangular arrangement of numbers (real or complex) which may be represented as matrix is enclosed by [ ] or ( ) or | | | | Compact form the above matrix is represented by [a ij] m x n or A = [a ij]. 1. Element of a Matrix The numbers a 11, a 12 … etc., in the above matrix are known as the element of the matrix, generally ...

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Mathematics Notes for Class 12 chapter 4. Determinants Determinant Every square matrix A is associated with a number, called its determinant and it is denoted by det (A) or |A| . Only square matrices have determinants. The matrices which are not square do not have determinants (i) First Order Determinant If A = [a], then det (A) = |A| = a (ii) Second Order Determinant |A| = a 11 a 22 – a 21 ...

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3. Maths 1 34 246 2 38 268 3 42 290 4 45 313 4. Biology 1 49 333 2 52 344 3 55 355 4 58 368 5. Board Question Paper: March 2015 Physics 61 Solutions in downloadable PDF format available at www.targetpublications.org Chemistry 65 Maths 69 Biology 73 6. Board Question Paper: October 2015 Physics 76 Chemistry 80 Maths 84

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178 Chapter 3 Matrix Algebra and Applications If the Canadian dollar was worth $0.65 U.S. at the time, compute the revenue in U.S. dollars. Solution Weend of the chapter to see how to need to multiply each revenue ﬁgure by 0.65. Let A be the matrix of rev-

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Chapter 3 Matrices. MATRICES 43 (ii) A matrix is said to be a column matrix if it has only one column. (iii) A matrix in which the number of rows are equal to the number of columns, is said to be a square matrix. Thus, an m × n matrix is said to be a square matrix if m = n and is known as a square matrix of order ‘n’. (iv) A square matrix B = [b ij] n×n is said to be a diagonal matrix if ...

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(32) Sample Question Paper - II Mathematics - Class XII Time : 3 Hours Max. Marks : 100 General Instructions 1. All questions are compulsory. 2. The question paper consists of 29 questions divided into three sections A, B and C. Section A comprises of

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“Std. XI Sci. : PERFECT MATHEMATICS - II” is a complete and thorough guide critically analysed and extensively drafted to boost the students confidence. The book is prepared as per the Maharashtra State board syllabus and provides answers to all textual questions. At the beginning of every chapter, topic – wise distribution of all

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Definition of a matrix; types of matrices; Algebra of matrices Properties of determinants; calculations of values of determinants upto third order; Adjoint of a matrix, elementary row and column operations; solution of a system of linear equations having unique solution and involving not more than three variables Books Recommended: 1. Allel R.G.a: Basic Mathematics: Macmi/lan, New Delhi. 2 ...

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Chapter 1 - Matrices & Determinants. 2 MATRICES “Matrix is a rectangular array of elements in rows and columns put in a large braces ” – defines the lexicon. But there is more than that meets the eye. The term “matrix” was coined in 1848 by J.J. Sylvester. Arthur Cayley, William Rowan Hamilton, Grassmann, Frobenius and von Neumann are among the famous mathematicians who have worked ...

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A matrix is basically an organized box (or “array”) of numbers (or other expressions). In this chapter, we will typically assume that our matrices contain only numbers. Example Here is a matrix of size 2 3 (“2 by 3”), because it has 2 rows and 3 columns: 10 2 015 The matrix consists of 6 entries or elements.

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