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Lauren Richards 2 years, 2 months ago
- I would scrap the first sentence of the statement. It should be in the description. I think I would just write "Using the laws of indices, simplify each expression down to its simplest form." The bit that you have afterwards that states "Recall that a^0=1..." didn't apply to any of the questions I was given, and it seems to be a random place to have this bit of info.
- In part c), you suggested that the user could use the rule a^-m=1/a^m but when I tried to write my answer in that form it did not accept it. I wouldn't suggest you suggest to the user to use the second rule.
- Typo in part b) of the advice - explicity instead of explicitly.
- I'm not sure, but I don't know if the advice for the alternative method of part c) is correct or clear enough. I thought that that rule was a way of reorganising the fraction rather than actually calculating stuff and that if you used it, the final answer of (8a^4)/(3a^6) would be 8/(3a^2) not 8/3(a^-2). I may well be wrong hahaha so just ignore me if so!
- I think you're missing a \displaystyle in part e) of the advice.
- I think the bit you have written at the end of part e) "This can be simplified further if possible." is a bit random. I would scrap it.
- I think you're missing some displaystyles in part f) of the advice as well.
- I think generally the question is very good and the advice is very clear and concise!
Aiden McCall 2 years, 2 months ago
For all parts, not 100% sure on this but personally I would omit the commas after each line of the equation and just have some punctuation at the end such as a full stop or comma like you have done, just not every line.
a) Very good
b) To read easier I would remove 'Then' from the first line and 'that' from the second. Also possibly but 'Therefore' (the one before the equation) on another line.
All other parts were good just the commas in the equations.
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This question is used in the following exams:
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- Powers and indices [L0 Randomised] by Matthew James Sykes in CHY1205.
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