Recent content by math-chick_41

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    Any advice about integration appreciated.

    practice them over and over. Start at your current skill level and do as many as you can, then move on to the next technique and repeat. I used this site a lot. http://archives.math.utk.edu/visual.calculus/
  2. M

    Graduate How to find pdf given moment generating function

    Given that the moment generating function of a random variable is (e^t)/(2-e^t) is there a way I can go backwards and find the pdf, or could 2 different pdf's have the same mgf?
  3. M

    Advice for a Math Major that wants to teach

    Hi there, that book seems fine to me if you want to self study basic analysis, but you should also pick up Principles of Mathematical Analysis by Rudin and get familar with that material as well. It covers most of the same stuff that the other book does, but Rudin is the standard for analysis...
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    Programs What can you do with a Math major? What does a mathematician do?

    at the undergrad level I was told the oppurtunities are similar for pure math and applied math majors. At my school the applied math students take numerical methods and math models while the pure math students take topology and abstract algebra, and that is basically the only differences in...
  5. M

    Question about pursuing mathematics

    It is hard to tell how far you can go in math if you have only had calc 3. You should continue your business stuff and take a math class along with it. So if you are in calc 3 now, take differential equations and linear algebra next and if you still like math go higher. Just a warning though...
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    Graduate Sylow first thm and normal subgroups

    I just finished learning about Sylow theorems and I have a quick question and was wondering if someone could help me see something. In this handout I have from a section on Sylow it gives a lemma to the first theorem and it says; Suppose p is prime and |G| = p^n then G has normal subgroups...
  7. M

    Integration by Parts: Struggling with e^xcos(x)dx

    do parts twice, combine like terms and you can solve in terms of the original integral in question.
  8. M

    Is U(x,y) = max { |x1-y1|, |x2-y2|} a Valid Metric?

    I need help on how to show something is a metric. U: R2 x R2 ----> R where U(x,y) = max { |x1-y1|,|x2-y2|} I can do all the properties except for the dreaded triangle inequality property. help me out please, thanks
  9. M

    Limit of [( x^1/2 ) - x^2] / (1- x^1/2)

    is x going to infinity or what?
  10. M

    Non-Abelian Group: (ab)^2 = (b^2)(a^2)?

    ok, thanks.
  11. M

    Non-Abelian Group: (ab)^2 = (b^2)(a^2)?

    it expands to abab , but how come (ab)^-1 = (b^-1)(a^-1)?
  12. M

    Non-Abelian Group: (ab)^2 = (b^2)(a^2)?

    in a non abelian group does (ab)^2 = (b^2)(a^2)? this isn't homework, my semester is over.
  13. M

    Proving Existence of x for Continuous Identity Function f[a,b]->[a,b]

    and what can you say about g(x) = f(x)-x on [a,b]?
  14. M

    Need Advice on University Majors: Business & Math

    with a math degree the sky is really the limit. You are not limited to just one or two jobs when you get a math degree. You can apply math to so many fields now. Here are some jobs for a math degree with some business background, actuary, economist, financial engineer, independent insurance...
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    Reducible polynomials over Zp.

    here is what I have, x^2+ax+b over Zp is reducible if we can factor it into (x-s)(x-t) where s,t are in Zp. if s=t then there are p choices for s,t so there are p reducible polynomial. if s is not t then there are p choices for s and p-1 for t and when you switch s and t you get the same...