Topics
6. Matrices
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AustraliaVIC
VCE 11 General 2023

6.04 Scalar multiplication

Lesson
Worksheet
Practice

Interactive practice questions

If $A$A$=$=
    $5$5    
    $-8$−8    
    $-9$−9    
, find $5A$5A.
$5A$5A $=$=
    $\editable{}$    
    $\editable{}$    
    $\editable{}$    
Easy
< 1min
If $A$A$=$=
    $2$2 $-6$−6    
    $-4$−4 $3$3    
, find $3A$3A.
Easy
< 1min
If $A$A$=$=
    $6$6 $1$1 $-2$−2    
    $5$5 $-6$−6 $7$7    
, find $-4A$−4A.
Easy
1min
If $A$A$=$=
    $15$15 $13$13    
    $17$17 $23$23    
    $14$14 $30$30    
, find $7A$7A.
Easy
1min
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Outcomes

U1.AoS3.3

matrix arithmetic: the definition of addition, subtraction, multiplication by a scalar, multiplication, the power of a square matrix, and the conditions for their use

U1.AoS3.9

add and subtract matrices, multiply a matrix by a scalar or another matrix, and raise a matrix to a power

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