Use Simpson's rule to find the arclength of the curve $LaTeX: \displaystyle f(x)=x^{2}$ on $LaTeX: \displaystyle (2,9)$ with $LaTeX: \displaystyle n=30$ .

$LaTeX: \displaystyle \Delta x = \frac{ 9 - 2 }{ 30 }$ . $LaTeX: \displaystyle x_i = a +i\Delta x = 2 + i \frac{7}{30}$ Using the 1,4,2,...,2,4,1 pattern the sum can be written as $LaTeX: \displaystyle x_i$ can be written split into the even and odd terms. $LaTeX: \displaystyle x_k = 2 + (2k-1)\cdot \frac{7}{30}$ for $LaTeX: \displaystyle k=1$ to $LaTeX: \displaystyle k =15$ and $LaTeX: \displaystyle x_j = 2 + (2j)\cdot \frac{7}{30}$ for $LaTeX: \displaystyle j=1$ to $LaTeX: \displaystyle j =14$ . $LaTeX: \displaystyle f(2) +f(9)+4\sum_{k=1}^{15}f\left(\frac{7 k}{15} + \frac{53}{30}\right) + 2\sum_{j=1}^{14}f\left(\frac{7 j}{15} + 2\right)$ . The value is $LaTeX: \displaystyle 77.374$