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Math Help - Guassian Quadrature

  1. #1
    Member zangestu888's Avatar
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    Guassian Quadrature

    I hope i have this posted in the right section, heres my question ; approximate the integral with 4 steps
    inte(b=pi/4 and a=0) to 6 decimal places using guassian quadrature..
    my problem here is that i missed class and am not sure at al how to do guassian quadrature if anyone can lead me to a site with a nice simple examples that may be similar to my question i just need information on how to to do such a problem, i consulted my txtbook no help to confusing no examples. please if anyone can teach me how to approach guassian qudarature problems thanks!
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  2. #2
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    Quote Originally Posted by zangestu888 View Post
    I hope i have this posted in the right section, heres my question ; approximate the integral with 4 steps
    inte(b=pi/4 and a=0) to 6 decimal places using guassian quadrature..
    my problem here is that i missed class and am not sure at al how to do guassian quadrature if anyone can lead me to a site with a nice simple examples that may be similar to my question i just need information on how to to do such a problem, i consulted my txtbook no help to confusing no examples. please if anyone can teach me how to approach guassian qudarature problems thanks!
    What function is being integrated?
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  3. #3
    Member zangestu888's Avatar
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    oops soory lol um the function am currently looking at is
    1/1+x^2 meaning its an easy function so were just ryin to test the error, was reading about guassian qudarature it seems its all in the interval from [-1,1] how can i transfom my points to such?
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  4. #4
    Member zangestu888's Avatar
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    i think imight have got it my approximation was around 0.663836 i hope am close
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