Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Having Trouble Adapting Discrete Mathematics

  1. Oct 10, 2011 #1
    Ok, so I'm having difficulty adapting to subjects like set theory etc.

    For example this question:

    L.{A,a} = {A, a, b, ab, ba, aba}

    Find L

    Now, I know the answer but it was a battle getting there. It took me 30 mins before giving up and turning on my PC. I got annoyed so much that didn't know the answer I started to type the question in notepad ++ and within 3 mins I got the right answer.

    I just can't seem to adapt to the notion of 'no order'...what the hell :(

    My tests are paper based, any ideas?
  2. jcsd
  3. Oct 10, 2011 #2
    I don't understadn what you mean with [itex]L.\{a,A\}[/itex]... What is L, what is . ??

    Anyway, discrete math will take some time to get used to. The only way to get used to it is by making lots of exercises. You can't expect being a pro in math immediately, it will take many many years.

    A thing you should do now is:
    1) Asking yourself why it took you so long. Could you have done it faster??
    2) Can you use the style of thinking to solve other problems?? (= can you generalize)
    3) Solve the same problem (or something similar) tomorrow

    Eventually, after a lot of practise, you'll get there!!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook