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Tamsin Smith 6 months, 2 weeks ago

Published this.

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Tamsin Smith 10 months, 3 weeks ago

Created this as a copy of Matrices: Add & Subtract 04.

Name	Status	Author	Last Modified
Matrices: Basics 01	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Basics 02	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Basics 03	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Basics 04	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Add & Subtract 01	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Add & Subtract 03	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Add & Subtract 02	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Add & Subtract 04	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Scalar Multiple 01	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Scalar Multiple 02	Needs to be tested	Michael Proudman	07/12/2021 08:24
Matrices: Scalar Multiple 03	Needs to be tested	Michael Proudman	07/12/2021 08:24
Subtraction of Matrices	draft	Tamsin Smith	17/09/2024 13:13
Order of a Matrix	draft	Tamsin Smith	17/09/2024 12:41
Choosing an Element	draft	Tamsin Smith	17/09/2024 12:40
Finding the Transpose	draft	Tamsin Smith	17/09/2024 13:21
Scalar Multiple of a Matrix	draft	Tamsin Smith	17/09/2024 13:12
Addition and Subtraction with Scalar Multiples	draft	Tamsin Smith	17/09/2024 12:46
Addition of Matrices	draft	Tamsin Smith	16/09/2024 12:24

There are 9 other versions that do you not have access to.

Question statement

Subtraction of Matrices

For each of the following matrices, carry out the subtraction

Give any introductory information the student needs.

			Name	Type	Generated Value

n1	integer	3
m1	integer	3
A	matrix	Matrix of size 3×3
e1	number	7
A2	matrix	Matrix of size 3×3

			Name	Type	Generated Value

n2	integer	2
m2	integer	3
B	matrix	matrix([-5,6,-9],[4,5,-7])
E2	number	-7
B2	matrix	matrix([7,-3,-1],[-1,-6,0])

			Name	Type	Generated Value

n3	integer	2
m3	integer	5
C	matrix	Matrix of size 2×5
trC	number	4
C2	matrix	Matrix of size 2×5

			Name	Type	Generated Value

n4	integer	2
m4	integer	4
D	matrix	matrix([2,-9,-7,-7],[1,7,3,7])
D2	matrix	matrix([-4,4,-3,8],[8,1,5,-6])

			Name	Type	Generated Value

n5	integer	3
m5	integer	3
EE	matrix	Matrix of size 3×3
EE2	matrix	Matrix of size 3×3

			Name	Type	Generated Value

ad1	matrix	Matrix of size 3×3
ad2	matrix	matrix([-12,9,-8],[5,11,-7])
ad3	matrix	Matrix of size 2×5
ad4	matrix	Matrix of size 2×4
ad5	matrix	Matrix of size 3×3

Automatically regenerate variables?

Name

Data type

Value

(a number)

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

→ Used by:

"Part a)" → "Unnamed gap" - Number of rows

Parts

Part a) Gap-fill
1. Gap Matrix entry
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Part b) Gap-fill
1. Gap Matrix entry
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Part c) Gap-fill
1. Gap Matrix entry
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Part d) Gap-fill
1. Gap Matrix entry
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Part e) Gap-fill
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Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

Let:

$A=\var{A}, B=\var{A2}$

Calculate $A-B$ :

$A-B=$ Unnamed gap

Advice

Subtraction is achieved by subtracting corresponding elements:

Using this technique gives us:

$\begin{aligned} A - B &= \var{A} - \var{A2} \\ &= \var{ad1} \end{aligned}$

$\begin{aligned} C - D &= \var{B} - \var{B2} \\ &= \var{ad2} \end{aligned}$

$\begin{aligned} E - F &= \var{C} - \var{C2} \\ &= \var{ad3} \end{aligned}$

$\begin{aligned} G - H &= \var{D} - \var{D2} \\ &= \var{ad4} \end{aligned}$

$\begin{aligned} I - J &= \var{EE} - \var{EE2} \\ &= \var{ad5} \end{aligned}$

Give a worked solution to the whole question.

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There was an error which means the tests can't run:

Part	Test	Passed?
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This question is used in the following exam:

Matrix Addition and Subtraction by Fraser Buxton in Tamsin's workspace.

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Subtraction of Matrices

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Tamsin Smith 6 months, 2 weeks ago

Tamsin Smith 10 months, 3 weeks ago

Subtraction of Matrices

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

Loading...

Error

Subtraction of Matrices

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Tamsin Smith 6 months, 2 weeks ago

Tamsin Smith 10 months, 3 weeks ago

Subtraction of Matrices

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`