2.)Describe how one refers to the entries of dmatrike For cxompleif in a motrix' hoe which looking at o particulor entry Would are Cimthemoti cally) tell someone entay you loSting atz are

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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2.)Describe how one
For exomple if
in a motrix' hoe'Would
refers to the entries of dmatrik.
are looking at a particular entry
ou Cmothemotically) tell someose
y
which entry gou
losting atz
are
Transcribed Image Text:2.)Describe how one For exomple if in a motrix' hoe'Would refers to the entries of dmatrik. are looking at a particular entry ou Cmothemotically) tell someose y which entry gou losting atz are
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Step 1

Matrices are commonly written in box brackets or in parenthesis:

A=a11a12a13...a1na21a22a23...a2na31a32a33...a3n...............am1am2am3...amn=a11a12a13...a1na21a22a23...a2na31a32a33...a3n...............am1am2am3...amn=aijm×n

The entry in the ith row and jth column of a matrix A is sometimes referred to as the i,j,(i,j),or(i,j)th entry of the matrix, and most commonly denoted as ai,j or aij .

Alternate notations for that entry are A[i,j] or Aij

 

{\displaystyle \mathbf {A} ={\begin{bmatrix}4&-7&\color {red}{5}&0\\-2&0&11&8\\19&1&-3&12\end{bmatrix}}}

 

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