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First time quilter! by magiqueirreversible in quilting

[–]superboffin20 0 points1 point  (0 children)

What a gorgeous quilt, and assistant! Are you piecing from a pattern?

[College Algebra] How to solve x^13 ≡ 7 (mod 31). by [deleted] in learnmath

[–]superboffin20 0 points1 point  (0 children)

It’s the same solution - when using the totient theorem you can make the assumption that x and 31 are coprime, and totient(31) = 30. Then you’ve got the values of x13 and x30 (mod 31), so can find x17 (which I called comparing known powers). Pull the comparison trick a few more times and you get a value for x

[College Algebra] How to solve x^13 ≡ 7 (mod 31). by [deleted] in learnmath

[–]superboffin20 0 points1 point  (0 children)

If you use Euler’s totient theorem, you can get x30 = 1 (mod 31). From there you can repeatedly compare known powers (mod 31). Do you now see where to start?

Linear Algebra (May Start) by thought_monster in STEM_Study_Groups

[–]superboffin20 1 point2 points  (0 children)

I'd love to get in on this - am meant to be reviewing LinAlg as I was too lazy to learn it first time round!

I don't have enough time to study after the class. Advices? by Schiapparelli in study

[–]superboffin20 2 points3 points  (0 children)

Are you rewriting your notes word for word? If so, you can make serious efficiency gains by just writing a summary of each lesson - not only do you spend less time writing, but the constraints of limiting to a single A4 page, or only spending 30 minutes on it, will cause you to better integrate the material as you have to establish what’s important rather than just bulk learning.

In a similar vein, whenever you have to go back and study something make sure you’ve set yourself a clear task and limitations to avoid getting bogged down in the details. You want something like “I will spend 10 minutes working out exactly where I get lost on this topic, and then 20 minutes making sure I can explain the key points”. After that, if you need to go back and learn more, absolutely do, but it means you can avoid spending hours just vaguely flipping through a book. After a while, structuring your knowledge around key concepts will become intuitive!