User talk:RobertFraser

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Thread titleRepliesLast modified
Math 110 (2016) Q8b322:38, 25 March 2018
Styling mathematics (again)122:08, 25 February 2018
Hint request306:58, 8 February 2018
Solution518:20, 5 February 2018
solution117:20, 17 January 2018
styling mathematics021:03, 11 March 2012

Math 110 (2016) Q8b

Hello Rob,

I wanted to point out that you put the wrong answer to Math 110 (2016) Q8b - you repeated your answer for Q8a by mistake instead of answering 8b. Can you fix that and then change the flag back to RS.

Thanks, Nina

ntm (talk)06:31, 25 March 2018

Hi Nina,

Thank you for pointing this out. I tend to write my solutions on my laptop, save them in plaintext files, and then copy them to the wiki. I copied the wrong one this time.


RobertFraser (talk)21:11, 25 March 2018

Lol thanks for fixing the inequality in my solution

RobertFraser (talk)22:35, 25 March 2018

Hi Rob,

Thanks for updating it, I approved it and I was just typing you a message saying that you had a small typo in the last line, so if you just pasted it from a local copy, you probably want to change it on your laptop also


ntm (talk)22:38, 25 March 2018

Styling mathematics (again)

Hi Robert,

Thanks so much for your recent contributions. In addition to David Kohler's previous suggestions to you, please also note the following:

  • Simply leave a blank line to insert a line break (instead of using a <br> tag)
  • Use \bmatrix in math environments for matrices, rather than arrays surrounded by parentheses
  • For augmented matrices, insert a bar in between the last two columns by using the array format specification {cc|c}, for example

Not only will these make things look nicer and more consistent, but they will also reduce the amount of typing you need to do!

In this regard, please review the (stylistic) changes I have made to your MATH 152 solutions, which were otherwise excellent!

Nicholas Hu (talk)00:17, 18 February 2018

Thank you for the suggestions! I don't know if you are aware of this, but David's suggestions are like 5 years old, so I kind of forgot about them.


RobertFraser (talk)22:08, 25 February 2018

Hint request

Hi Rob,

Thank you for writing solutions of circuit problems! (Last year, no TA knows the solution for this and thanks to you finally we get the solution!) But for Math Exam Resources/Courses/MATH152/April 2017/Question B 03 (a), it would be great if you move the hint to the solution and write some hint.


HyunjuKwon (talk)07:10, 4 February 2018

Hi Hyunju,

I accidentally copied the solution into the hint! Thanks for pointing this out. I will fix this tomorrow. Until then I'll tag this QBH, QBS.


RobertFraser (talk)23:16, 4 February 2018

Hi Hyunju,

I've made the requested change.

RobertFraser (talk)04:05, 6 February 2018

Thanks a lot!

HyunjuKwon (talk)06:58, 8 February 2018

Hi Robert,

I am not getting the solution of 5(d), to me it doesn't seem to be right, could you check it again? Thank you


HANHONG (talk)07:08, 5 February 2018

I checked the solution. I forgot that it was + sin k and not - sin k (and this has been fixed). Was this your only problem with the solution? Or was there some other error?

RobertFraser (talk)17:33, 5 February 2018

Hi Robert,

I think the sum is bigger than a p-series, then it diverges.


HANHONG (talk)17:49, 5 February 2018

I think I made a typo and accidentally had the inequality going the wrong way. I've changed the solution again. Do you think this is better?

RobertFraser (talk)18:11, 5 February 2018

I think everything is fine now, thank you.

HANHONG (talk)18:14, 5 February 2018

Thank you for pointing this out! I must have just been half-asleep when I wrote this solution

RobertFraser (talk)18:20, 5 February 2018

Hi Robert,

For MATH102/December 2015/Question 04, could you please check the final answer for which I think should be (d) instead of (a).

Thanks, Ziming

ZIMINGYIN (talk)04:23, 17 January 2018

Hi Ziming,

Thank you for catching that! I've made the change. Please check the solution again and let me know if you have any further comments.


RobertFraser (talk)17:20, 17 January 2018

styling mathematics

Hi Robert,

Please have a look at: Science:Math_Exam_Resources/Courses/MATH101/April_2005/Question_3_(c)/Solution_1 where I made several changes in the display of the mathematics. A few points that I suggest:

  • Indent math formulas that are on separate lines by typing :<math>formula</math>
  • Use the align environment for multiple equalities (see the code in the page I linked)
  • in the few cases where the display style is not activated, enforce it manually by typing \displaystyle inside your formula (this is a tex command). See for example the line with 3dy=dx in the linked page.

Thanks for all the good work!

David Kohler21:03, 11 March 2012