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Try to answer the following questions here:

  • What is this question used for?
  • What does this question assess?
  • What does the student have to do?
  • How is the question randomised?
  • Are there any implementation details that editors should be aware of?




Checkpoint description

Describe what's changed since the last checkpoint.

Thomas Winyard 1 year, 8 months ago

Created this as a copy of Stephen's copy of (CLP's) Inverse Matrix.
Name Status Author Last Modified
Inverse Matrix Ready to use Christian Lawson-Perfect 01/06/2016 11:03
Habiba's copy of Inverse Matrix Ready to use Habiba Gora 01/06/2016 09:47
Ricardo's copy of Inverse Matrix Ready to use Ricardo Monge 01/06/2016 09:47
Hollie's copy of Inverse Matrix draft Hollie Tarr 01/12/2016 12:34
Hollie's copy of Inverse Matrix draft Hollie Tarr 22/02/2017 14:23
Inverse Matrix draft Owen Jepps 07/09/2020 01:38
Stephen's copy of (CLP's) Inverse Matrix draft Stephen Flood 21/02/2019 19:20
Thomas's copy of Stephen's copy of (CLP's) Inverse Matrix draft Thomas Winyard 21/02/2019 19:16
Griff's copy of Inverse Matrix draft Griff Ware 28/04/2019 13:37
Marie's copy of Inverse Matrix draft Marie Nicholson 20/10/2019 17:07
Inverse matrix method draft Marie Nicholson 25/09/2020 14:45
Vladimir's copy of Inverse Matrix draft Vladimir Vingoradov 29/01/2020 00:26
Inverse Matrix - 1 draft Padraig Kirwan 06/04/2020 08:53
khanh's copy of Inverse Matrix draft khanh pham 12/05/2020 16:13
Inverse Algorithm with steps Ready to use Julia Goedecke 27/08/2020 21:59
Chayapa's copy of Inverse Matrix draft Chayapa D 25/07/2020 18:54
Jonathan's copy of Inverse Matrix draft Jonathan Rae 17/09/2020 12:36

Give any introductory information the student needs.

No variables have been defined in this question.

(a number)

Numbers between and (inclusive) with step size
A random number between and (inclusive) with step size

(text string)


(text strings)



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for seconds

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The correct answer is an equation. Use the accuracy tab to generate variable values satisfying this equation so it can be marked accurately.

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Give expressions which produce values for each of the variables in the expected answer. Leave blank to pick a random value from the range defined above, following the inferred type of the variable.

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The following tests check that the question is behaving as desired.

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To account for errors made by the student in earlier calculations, replace question variables with answers to earlier parts.

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The variable replacements you've chosen will cause the following variables to be regenerated each time the student submits an answer to this part:

These variables have some random elements, which means they're not guaranteed to have the same value each time the student submits an answer. You should define new variables to store the random elements, so that they remain the same each time this part is marked.

More information about this problem

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