Mathematics Specification B - 4MB1 PearsonEdexcel

Matrix Operations

Gbogbo ọrọ náà

A matrix is a rectangular grid of numbers that lets you store and manipulate a whole table of data, such as a set of sports results or a system of coordinates, using a single algebraic object. Once the rules for combining matrices are fixed, matrices become a compact way to represent information that would otherwise take rows of separate equations.

This topic covers representing data as a matrix, adding and multiplying matrices (including the surprising fact that order matters), multiplying by a scalar, the identity and zero matrices, and finding the determinant and inverse of a 2 by 2 matrix.

Ebumnobi

  1. Represent data by a matrix
  2. Perform addition and multiplication of matrices of order not more than 3 x 3
  3. Multiply a matrix by a scalar
  4. Understand and use unit (identity) matrix and zero (null) matrix of order not more than 3 x 3
  5. Find determinants and inverses of non-singular 2 x 2 matrices

Akọmọ Ojú-ẹkọ

A matrix is a rectangular array of numbers arranged in rows and columns, enclosed in brackets. A matrix with m rows and n columns has order \(m \times n\) (rows are always stated first). The individual numbers are called elements. Matrices are a natural way to store tabulated data: a sports results table, a set of coordinates, or the coefficients of a system of equations can all be written as a single matrix.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Matrix Operations. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

  1. What is the order of a matrix with 3 rows and 2 columns? A) 2 x 3 B) 3 x 2 C) 5 x 1 D) 6 x 1 Answer: B
  2. If A = [[2,1],[0,3]] and B = [[1,4],[-1,2]], what is A + B? A) [[3,5],[-1,5]] B) [[1,-3],[1,1]] C) [[2,4],[0,6]] D) [[3,1],[0,3]] Answer: A
  3. What is the determinant of [[5,2],[3,1]]? A) 1 B) -1 C) 11 D) 5 Answer: B
  4. A matrix with determinant equal to zero is called: A) an identity matrix B) a zero matrix C) a singular matrix D) a scalar matrix Answer: C
  5. For two matrices A and B, which statement is generally true? A) AB = BA B) AB does not equal BA C) A + B = B + A only if both are square D) AB is always the zero matrix Answer: B

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
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Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

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