Recent content by Niall101

  1. N

    D'alembert solution Help (easy)

    Yes I have this equation. Does the integral go to a constant. ITs after this i don't know what to do
  2. N

    D'alembert solution Help (easy)

    Hi I have been trying to figure out how this method works. Searched the forum but got no results. Have attached an example I am trying to do. If someone could show me it would be great. Or even show me a similar example worked out. Thanks in advance
  3. N

    The normalizer of the normalizer of a p-sylow supgroup

    Thanks! So I can do it this way then with that result.
  4. N

    Poisson Distribution: finding the MEan

    Hi I assume it would be 12. 2 x 6? I have an answer for this question now. I just took the mean per hour and for the last 3 hours took the mean to be 7 and I got 53. It just seams too easy. Its the last question on a problem sheet and the first 5 were much more difficult and more involved...
  5. N

    Poisson Distribution: finding the MEan

    A store opens at 8 in the morning. from 8 until 10 customers arrive at poisson rate 6 per hour. Between 10 and 12 they arrive at a poisson rate of 10 per hour. From 12 to 2, the store closes for lunch, Finally from 2 to 5 the arrival rate drops linearly from 10 per hour at 2 to four per hour at...
  6. N

    The normalizer of the normalizer of a p-sylow supgroup

    Not really sorry. Both are subgroups of G yes? If I let H = the normalizer of P Can I say P is normal in H and that as all sylow subgroups are conjugate H contains no other sylow subgroups then if N(N(P)) moves P somewhere else then there would be 2 P sylow subgroups in H? Note: Havent been...
  7. N

    The normalizer of the normalizer of a p-sylow supgroup

    Im trying to prove N(N(P)) = N(P) So N(P) = set oh h where h^-1Ph = p Then N(N(P)) = k where k^-1hk = h the fact that p is a p sylow subgroup gives me what information? I am unsure. Thanks in advance!
  8. N

    Fitting Two Lines with Minitab: A Beginner's Guide

    I have a scatterplot X is just 30 given values. Y is 2*X + eps, where eps is a random figure. The Plot is Y vs X I am asked to fit 2 lines Y= ax +b by least squared method and X = cy +d Similarly I do not know which command to use on minitab. Is this just standard regression? if so how do...
  9. N

    Finding the Parametrized curve

    Thanks so much! I am going to work more on this today after class.
  10. N

    Finding the Parametrized curve

    Question: Attached. Attempt. I know I have to find P1 and p2 depending on x and L to satisfy ax^2 + bxy + cy^2 + dx + ex + f =0 I have tried looking at the ladder when resting on axis to get a better picture but cannot see where to go next.
  11. N

    Finding Roots of Irreducible Polynomials in Z5

    Ok so the only possible roots are 1 2 3 4 or 5 is this correct? Thanks so much for your reply! i have an exam is a few hours with this on it! Edit: or is +-1 the only possible roots? Thanks again
  12. N

    Finding Roots of Irreducible Polynomials in Z5

    F= x^3 + 2x + 1 irreducable in Z5 (Z subscript 5) i have tried EC looking at F(x+1) which doesn't work for me. Cant think of what else to try. Help much appreciated. Need to know this for an exam later! ahhh
  13. N

    IS f(x)= x^4 + x^3 -x^2 - 2x -2 irreducable over Q?

    great thanks I got it now. Thanks for your help!
  14. N

    IS f(x)= x^4 + x^3 -x^2 - 2x -2 irreducable over Q?

    Yeah i think that's what i was trying to do. Have to do this in an exam later. But We haven't covered minimal polynomials yet so he probably wants a different method. Could you point me in the right direction?
  15. N

    IS f(x)= x^4 + x^3 -x^2 - 2x -2 irreducable over Q?

    Over Q tho are +-5 +-1 The only possible roots of x^3-5? cool thanks so much! Let A = cuberoot(5), and let F = a + bA + cA in R a; b; c in Q Find the multiplicative inverse of the element 2 +A +A^2 in the field F. For this I Know There is an element in the field which multiplied by this...
Back
Top