Matrix Operations

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Marie Nicholson

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Marie Nicholson 7 years, 1 month ago

Created this.

Name	Status	Author	Last Modified
Matrix Operations	draft	Marie Nicholson	04/02/2021 15:44
Matrix Arithmetics	Ready to use	Timur Zaripov	17/06/2022 09:37
Musa's copy of Matrix sum	draft	Musa Mammadov	01/08/2022 08:15
Musa's copy of 3 Matrix sum	draft	Musa Mammadov	27/06/2023 01:47
Musa's Duality 1	draft	Musa Mammadov	20/07/2023 01:49
Musa's Duality 2	draft	Musa Mammadov	20/07/2023 01:50
Musa's Duality 3	draft	Musa Mammadov	20/07/2023 01:50
Musa's Duality 4	draft	Musa Mammadov	20/07/2023 01:50
Musa's Duality 5	draft	Musa Mammadov	20/07/2023 01:51
Musa's Duality 6	draft	Musa Mammadov	20/07/2023 01:51
Musa's Duality 7	draft	Musa Mammadov	20/07/2023 01:51
Musa's Binary optimisation	draft	Musa Mammadov	20/07/2023 01:53
Musa's Continuous optimisation	draft	Musa Mammadov	20/07/2023 01:53

There are 34 other versions that do you not have access to.

Question statement

Find the answers to the following matrix calculations, filling in your answers in the spaces provided.

Give any introductory information the student needs.

			Name	Type	Generated Value

a21	integer	-10
a22	integer	-8
ab	matrix	matrix([-67,78],[-54,-52])
ans2	matrix	matrix([2,-5],[7,-4])
b22	integer	-6
b21	integer	8
at	matrix	matrix([3,-10],[-8,-8])
ans	matrix	matrix([2,2],[-2,-14])
d11	integer	-5
d12	integer	1
p	integer	10
pc	matrix	matrix([-30,-40],[30,40])
b12	integer	10
b11	integer	-1
test	integer	-8
c12	integer	-4
c11	integer	-3
adj	matrix	matrix([-8,8],[10,3])
a	matrix	matrix([3,-8],[-10,-8])
a11	integer	3
a12	integer	-8
c	matrix	matrix([-3,-4],[3,4])
b	matrix	matrix([-1,10],[8,-6])
c22	integer	4
bat	matrix	matrix([-83,-70],[72,-32])
c21	integer	3
d	matrix	matrix([-5,1],[-4,8])
deta	number	-104
d22	integer	8
det	integer	-104
q	integer	7
d21	integer	-4
u	matrix	matrix([2,2],[-2,-14])
qd	matrix	matrix([-35,7],[-28,56])
v	matrix	matrix([5,-47],[58,-16])

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(-10..10#1)

JME function reference

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`

-10

This variable doesn't seem to be used anywhere.

Gap-fill

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

$\var{a}+\var{b}$

$\Bigg($	Gap 0.	Gap 1.	$\Bigg)$
	Gap 2.	Gap 3.

Advice

(a)

$\var{a}+\var{b}=\var{u}$

Just add corresponding elements together.

(b)

$\var{p}\var{c}-\var{q}\var{d}$

Multiply each element of the first matrix by $\var{p}$ ...

$\var{p}\var{c}=\var{pc}$

...and multiply each element of the second matrix by $\var{q}$ .

$\var{q}\var{d}=\var{qd}$

Finally, subtract corresponding elements

$\var{p}\var{c}-\var{q}\var{d}=\var{pc}-\var{qd}=\var{v}$

For more explanation, look for relevant resources in the 'Matrices' section on our Maths Study Skills page.

Give a worked solution to the whole question.

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This question is used in the following exam:

Week 19 - Practice Exercises by Bobby Kahlon in Bobby's workspace.

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

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Checkpoint description

Marie Nicholson 7 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

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Error

Matrix Operations

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Marie Nicholson 7 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`