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root/REPOS_ERICCA/document/GMC1035/tableintegration1d.tex
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Ajout des notes de cours de GMC1035

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# Content
1 \newpage
2 \begin{subappendices}
3 \section{Table d'intégration simple}
4
5 \begin{tabular}{|c|c|c|c||c|c|c|c|}
6 \hline
7 \multicolumn{4}{|c||}{\textbf{Quadrature de Gauss-Legendre}} & \multicolumn{4}{|c|}{\textbf{Newton-Cotes}}\\
8 \hline
9 $r$ & $t_i$ & $w_i$ & Degré de précision & $r$ & $t_i$ & $w_i$ & Degré de précision \\
10 \hline
11 $1$ & $0$ & $2$ & $1$ & \multicolumn{4}{|c|}{}\\
12 \hline
13 $2$ & $-\sqrt{\frac{1}{3}}$ & $1$ & $3$ & $2$ & $-1$ & $1$ & $1$\\
14 & $\sqrt{\frac{1}{3}}$ & $1$ & & & $1$& $1$ & \\
15 \hline
16 $3$ & $0$ & $\frac{8}{9}$ & $5$ & $3$ & $0$ & $\frac{4}{3}$ & $2$ \\
17 & $-\frac{\sqrt{15}}{5}$ & $\frac{5}{9}$ & & & $-1$ & $\frac{1}{3}$ &\\
18 & $\frac{\sqrt{15}}{5}$ & $\frac{5}{9}$ & & & $1$ & $\frac{1}{3}$&\\
19 \hline
20 $4$ & $-\frac{\sqrt{525+70\sqrt{30}}}{35}$ & $\frac{18-\sqrt{30}}{36}$ & $7$ & $4$ & $-\frac{1}{3}$ & $\frac{3}{4}$ & $3$\\
21 & $-\frac{\sqrt{525-70\sqrt{30}}}{35}$ & $\frac{18+\sqrt{30}}{36}$ && & $\frac{1}{3}$ & $\frac{3}{4}$ & \\
22 & $\frac{\sqrt{525-70\sqrt{30}}}{35}$ & $\frac{18+\sqrt{30}}{36}$ & & & $-1$ & $\frac{1}{4}$ & \\
23 & $\frac{\sqrt{525+70\sqrt{30}}}{35}$ & $\frac{18-\sqrt{30}}{36}$ & & & $1$ & $\frac{1}{4}$ & \\
24 \hline
25 $5$ & $0$ & $\frac{128}{225}$ & $9$&$5$ & $0$ & $\frac{12}{45}$ & $5$\\
26 & $-\frac{\sqrt{245+14\sqrt{70}}}{35}$ & $\frac{322-13\sqrt{70}}{900}$ & & & $-\frac{1}{2}$ & $\frac{32}{45}$ &\\
27 & $-\frac{\sqrt{245-14\sqrt{70}}}{35}$ & $\frac{322+13\sqrt{70}}{900}$ & & & $\frac{1}{2}$ & $\frac{32}{45}$ &\\
28 & $\frac{\sqrt{245-14\sqrt{70}}}{35}$ & $\frac{322+13\sqrt{70}}{900}$ & & & $-1$ & $\frac{7}{45}$ &\\
29 & $\frac{\sqrt{245+14\sqrt{70}}}{35}$ & $\frac{322-13\sqrt{70}}{900}$ && & $1$ & $\frac{7}{45}$ &\\
30 \hline
31 \end{tabular}
32
33 \begin{equation*}
34 \int_{-1}^1f(x)dx=\sum_{i=1}^rw_if(t_i)
35 \end{equation*}
36 \begin{eqnarray*}
37 \int_a^b f(x)dx&=&\sum_{i=0}^{n-1} \frac{x_{i+1}-x_i}{2} \sum_{j=1}^{r} w_jf\left(\frac{x_{i+1}-x_i}{2}t_j+\frac{x_{i+1}+x_i}{2}\right)\\
38 x_i&=&a+\frac{i}{n}(b-a)\\
39 \end{eqnarray*}
40 \end{subappendices}