Christian Lawson-Perfect
Member of the e-learning unit in Newcastle University's School of Mathematics and Statistics.
Lead developer of Numbas.
I'm happy to answer any questions - email me.
Christian's activity
Christian Lawson-Perfect on Fill in the gaps in an arithmetic sequence 8 years, 5 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect on Fill in the gaps in an arithmetic sequence 8 years, 5 months ago
Saved a checkpoint:
Extracted from a bigger question.
Changed the second sequence so the common difference is negative, and randomsied the starting indices of both sequences.
Rewrote the advice so it's simpler.
Christian Lawson-Perfect copied Arithmetic sequences in an ice cream shop to Fill in the gaps in an arithmetic sequence 8 years, 5 months ago
Christian Lawson-Perfect on Find common difference in arithmetic sequences with gaps 8 years, 5 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect on Find common difference in arithmetic sequences with gaps 8 years, 5 months ago
Saved a checkpoint:
Copied from a larger question.
Rejigged the variables so that the same common difference doesn't occur more than once, and the start index for each sequence is randomised.
Added a new part a where all the terms are given.
Christian Lawson-Perfect copied Arithmetic sequences in an ice cream shop to Find common difference in arithmetic sequences with gaps 8 years, 5 months ago
Christian Lawson-Perfect published Complete the square and find solutions 8 years, 5 months ago
Christian Lawson-Perfect on Complete the square and find solutions 8 years, 5 months ago
Saved a checkpoint:
Extracted this from a bigger question on completing the square, and changed the variables so the roots are always nice integers.
Christian Lawson-Perfect on Complete the square and find solutions 8 years, 5 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect on Completing the square 8 years, 5 months ago
Gave some feedback: Ready to use