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  1. N

    Last geometry challenge (very difficult)

    nah Nah.. I think the answer is R/sqrt2...because you have x^2 = (R/2)^2 +(R/2)^2 and that is simply x^2 =(2R^2/4) and then x^2=R^2/2....so x=R/sqrt2 :)
  2. N

    Please help pascal

    I've hot two assignments to do in pascal and i have no idea how to make it :( i dont even have anything similar and i dont have time to search the web for answers now I really need help and i need it as fast as it can be so please if anyone can help me with this i would really reallllyyy...
  3. N

    Fourier series

    hm Not really :frown: the task...as so on my exam..they strictly want it with fourier ... bcs we do also taylor..and in task they mention which one they want..
  4. N

    Fourier series

    aha Yes i just got it.. it is when you use integr. in series so then it would be ((-1)^n +1) thanx :smile:
  5. N

    Fourier series

    Well hmm...not really :rolleyes: I did get almoust correct answer BUT... you see b_n is zero but a_n is not...and this is where i stuck ...i cant get correct a_n by the way...can you tell me is this true? cos(npi) + cos(0pi) = (-1)^(n+1) thanx again :smile:
  6. N

    Fourier series

    Hi there!! Can anyone please help me with this one..? Find the Fourier Sine series of f(x)=sin(x/2) for interval (0,pi) thanx a lot :)
  7. N

    Please help - integration

    Well first thing i always do is when i have any function given like this is to rationalize it ..meaning multiply all of this with (x+sqrt(x+2))/(x+sqrt(x+2)) You will get then this sqrt up... (x+sqrt(x+2)) / ((x^2)-x-2) then you have (x+sqrt(x+2)) / (x-2)(x+1) Then you can simply seperate...
  8. N

    Find the line integral help

    Thank you so much i will try to work from there :)
  9. N

    Find the line integral help

    Hi!! I had exam today and i got one task that i am not sure how i should have made it so i hope you can help me with this one It goes : Find the line integral (i'm not good with using symbols so i'll do my best here) integral by line C from (y-z)dx+(z-x)dy+(x-y)dz int_C (...
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