## Calculates the integral of the given function f(x) over the interval (a,b) using Gauss-Lobatto quadrature.

 $\normal Gauss-Lobatto\ quadrature\\[10] {\large\int_{\small -1}^{\hspace{25}\small 1}}f(x)dx\simeq{\large\frac{2}{n(n+1)}}(f(-1)+f(1))+{\large\sum_{\small i=2}^{n-1}}w_{i}f(x_i)\\{\large\int_a^{\hspace{25}b}}f(x)dx\simeq{\large\frac{b-a}{2}[{\large\frac{2(f(a)+f(b))}{n(n+1)}}+\sum_{\small i=1}^{n}}w_{i}f({\large\frac{b-a}{2}}x_i+{\large\frac{b+a}{2}})]\\\vspace{20}$
 f(x) a , b partition n 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 n=2,3,4,..,100
 6dgt10dgt14dgt18dgt22dgt26dgt30dgt34dgt38dgt42dgt46dgt50dgt
 The integrand f(x) is assumed to be analytic and non-periodic.$\normal Gaussian\ quadrature\\\hspace{20} {\large\int_{\small a}^{\hspace{25}\small b}}w(x)f(x)dx\simeq{\large\sum_{\small i=1}^{n}}w_{i}f(x_i)\\Gauss-Lobatto\ quadrature\\\hspace{30} interval(a,b):\hspace{20} [-1,\ 1]\\\hspace{30} w(x):\hspace{80} 1\\\hspace{30} polynomialsl:\hspace{10} P'_{n-1} (x)\\$

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