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Use Newton's method to find the first 5 approximations of the solution to the equation \(\displaystyle \sin{\left(x \right)}= \frac{161 x^{3}}{500} - 5\) using \(\displaystyle x_0=3\).
Using the formula for Newton's method gives \begin{equation*}x_{n+1} = x_{n} - \frac{- \frac{161 x_{n}^{3}}{500} + \sin{\left(x_{n} \right)} + 5}{- \frac{483 x_{n}^{2}}{500} + \cos{\left(x_{n} \right)}} \end{equation*} Using \(\displaystyle x_0 = 3\) and \(\displaystyle n = 0,1,2,3,\) and \(\displaystyle 4\) gives: \begin{equation*}x_{1} = (3.0000000000) - \frac{- \frac{161 (3.0000000000)^{3}}{500} + \sin{\left((3.0000000000) \right)} + 5}{- \frac{483 (3.0000000000)^{2}}{500} + \cos{\left((3.0000000000) \right)}} = 2.6331182626\end{equation*} \begin{equation*}x_{2} = (2.6331182626) - \frac{- \frac{161 (2.6331182626)^{3}}{500} + \sin{\left((2.6331182626) \right)} + 5}{- \frac{483 (2.6331182626)^{2}}{500} + \cos{\left((2.6331182626) \right)}} = 2.5813870091\end{equation*} \begin{equation*}x_{3} = (2.5813870091) - \frac{- \frac{161 (2.5813870091)^{3}}{500} + \sin{\left((2.5813870091) \right)} + 5}{- \frac{483 (2.5813870091)^{2}}{500} + \cos{\left((2.5813870091) \right)}} = 2.5803664606\end{equation*} \begin{equation*}x_{4} = (2.5803664606) - \frac{- \frac{161 (2.5803664606)^{3}}{500} + \sin{\left((2.5803664606) \right)} + 5}{- \frac{483 (2.5803664606)^{2}}{500} + \cos{\left((2.5803664606) \right)}} = 2.5803660657\end{equation*} \begin{equation*}x_{5} = (2.5803660657) - \frac{- \frac{161 (2.5803660657)^{3}}{500} + \sin{\left((2.5803660657) \right)} + 5}{- \frac{483 (2.5803660657)^{2}}{500} + \cos{\left((2.5803660657) \right)}} = 2.5803660657\end{equation*}
\begin{question}Use Newton's method to find the first 5 approximations of the solution to the equation $\sin{\left(x \right)}= \frac{161 x^{3}}{500} - 5$ using $x_0=3$. \soln{9cm}{Using the formula for Newton's method gives \begin{equation*}x_{n+1} = x_{n} - \frac{- \frac{161 x_{n}^{3}}{500} + \sin{\left(x_{n} \right)} + 5}{- \frac{483 x_{n}^{2}}{500} + \cos{\left(x_{n} \right)}} \end{equation*} Using $x_0 = 3$ and $n = 0,1,2,3,$ and $4$ gives: \begin{equation*}x_{1} = (3.0000000000) - \frac{- \frac{161 (3.0000000000)^{3}}{500} + \sin{\left((3.0000000000) \right)} + 5}{- \frac{483 (3.0000000000)^{2}}{500} + \cos{\left((3.0000000000) \right)}} = 2.6331182626\end{equation*} \begin{equation*}x_{2} = (2.6331182626) - \frac{- \frac{161 (2.6331182626)^{3}}{500} + \sin{\left((2.6331182626) \right)} + 5}{- \frac{483 (2.6331182626)^{2}}{500} + \cos{\left((2.6331182626) \right)}} = 2.5813870091\end{equation*} \begin{equation*}x_{3} = (2.5813870091) - \frac{- \frac{161 (2.5813870091)^{3}}{500} + \sin{\left((2.5813870091) \right)} + 5}{- \frac{483 (2.5813870091)^{2}}{500} + \cos{\left((2.5813870091) \right)}} = 2.5803664606\end{equation*} \begin{equation*}x_{4} = (2.5803664606) - \frac{- \frac{161 (2.5803664606)^{3}}{500} + \sin{\left((2.5803664606) \right)} + 5}{- \frac{483 (2.5803664606)^{2}}{500} + \cos{\left((2.5803664606) \right)}} = 2.5803660657\end{equation*} \begin{equation*}x_{5} = (2.5803660657) - \frac{- \frac{161 (2.5803660657)^{3}}{500} + \sin{\left((2.5803660657) \right)} + 5}{- \frac{483 (2.5803660657)^{2}}{500} + \cos{\left((2.5803660657) \right)}} = 2.5803660657\end{equation*} } \end{question}
\documentclass{article} \usepackage{tikz} \usepackage{amsmath} \usepackage[margin=2cm]{geometry} \usepackage{tcolorbox} \newcounter{ExamNumber} \newcounter{questioncount} \stepcounter{questioncount} \newenvironment{question}{{\noindent\bfseries Question \arabic{questioncount}.}}{\stepcounter{questioncount}} \renewcommand{\labelenumi}{{\bfseries (\alph{enumi})}} \newif\ifShowSolution \newcommand{\soln}[2]{% \ifShowSolution% \noindent\begin{tcolorbox}[colframe=blue,title=Solution]#2\end{tcolorbox}\else% \vspace{#1}% \fi% }% \newcommand{\hideifShowSolution}[1]{% \ifShowSolution% % \else% #1% \fi% }% \everymath{\displaystyle} \ShowSolutiontrue \begin{document}\begin{question}(10pts) The question goes here! \soln{9cm}{The solution goes here.} \end{question}\end{document}
<p> <p>Use Newton's method to find the first 5 approximations of the solution to the equation <img class="equation_image" title=" \displaystyle \sin{\left(x \right)}= \frac{161 x^{3}}{500} - 5 " src="/equation_images/%20%5Cdisplaystyle%20%5Csin%7B%5Cleft%28x%20%5Cright%29%7D%3D%20%5Cfrac%7B161%20x%5E%7B3%7D%7D%7B500%7D%20-%205%20" alt="LaTeX: \displaystyle \sin{\left(x \right)}= \frac{161 x^{3}}{500} - 5 " data-equation-content=" \displaystyle \sin{\left(x \right)}= \frac{161 x^{3}}{500} - 5 " /> using <img class="equation_image" title=" \displaystyle x_0=3 " src="/equation_images/%20%5Cdisplaystyle%20x_0%3D3%20" alt="LaTeX: \displaystyle x_0=3 " data-equation-content=" \displaystyle x_0=3 " /> . </p> </p>
<p> <p>Using the formula for Newton's method gives
<img class="equation_image" title=" x_{n+1} = x_{n} - \frac{- \frac{161 x_{n}^{3}}{500} + \sin{\left(x_{n} \right)} + 5}{- \frac{483 x_{n}^{2}}{500} + \cos{\left(x_{n} \right)}} " src="/equation_images/%20x_%7Bn%2B1%7D%20%3D%20%20x_%7Bn%7D%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20x_%7Bn%7D%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28x_%7Bn%7D%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20x_%7Bn%7D%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28x_%7Bn%7D%20%5Cright%29%7D%7D%20%20%20" alt="LaTeX: x_{n+1} = x_{n} - \frac{- \frac{161 x_{n}^{3}}{500} + \sin{\left(x_{n} \right)} + 5}{- \frac{483 x_{n}^{2}}{500} + \cos{\left(x_{n} \right)}} " data-equation-content=" x_{n+1} = x_{n} - \frac{- \frac{161 x_{n}^{3}}{500} + \sin{\left(x_{n} \right)} + 5}{- \frac{483 x_{n}^{2}}{500} + \cos{\left(x_{n} \right)}} " />
Using <img class="equation_image" title=" \displaystyle x_0 = 3 " src="/equation_images/%20%5Cdisplaystyle%20x_0%20%3D%203%20" alt="LaTeX: \displaystyle x_0 = 3 " data-equation-content=" \displaystyle x_0 = 3 " /> and <img class="equation_image" title=" \displaystyle n = 0,1,2,3, " src="/equation_images/%20%5Cdisplaystyle%20n%20%3D%200%2C1%2C2%2C3%2C%20" alt="LaTeX: \displaystyle n = 0,1,2,3, " data-equation-content=" \displaystyle n = 0,1,2,3, " /> and <img class="equation_image" title=" \displaystyle 4 " src="/equation_images/%20%5Cdisplaystyle%204%20" alt="LaTeX: \displaystyle 4 " data-equation-content=" \displaystyle 4 " /> gives:
<img class="equation_image" title=" x_{1} = (3.0000000000) - \frac{- \frac{161 (3.0000000000)^{3}}{500} + \sin{\left((3.0000000000) \right)} + 5}{- \frac{483 (3.0000000000)^{2}}{500} + \cos{\left((3.0000000000) \right)}} = 2.6331182626 " src="/equation_images/%20x_%7B1%7D%20%3D%20%20%283.0000000000%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20%283.0000000000%29%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28%283.0000000000%29%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20%283.0000000000%29%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28%283.0000000000%29%20%5Cright%29%7D%7D%20%3D%202.6331182626%20" alt="LaTeX: x_{1} = (3.0000000000) - \frac{- \frac{161 (3.0000000000)^{3}}{500} + \sin{\left((3.0000000000) \right)} + 5}{- \frac{483 (3.0000000000)^{2}}{500} + \cos{\left((3.0000000000) \right)}} = 2.6331182626 " data-equation-content=" x_{1} = (3.0000000000) - \frac{- \frac{161 (3.0000000000)^{3}}{500} + \sin{\left((3.0000000000) \right)} + 5}{- \frac{483 (3.0000000000)^{2}}{500} + \cos{\left((3.0000000000) \right)}} = 2.6331182626 " />
<img class="equation_image" title=" x_{2} = (2.6331182626) - \frac{- \frac{161 (2.6331182626)^{3}}{500} + \sin{\left((2.6331182626) \right)} + 5}{- \frac{483 (2.6331182626)^{2}}{500} + \cos{\left((2.6331182626) \right)}} = 2.5813870091 " src="/equation_images/%20x_%7B2%7D%20%3D%20%20%282.6331182626%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20%282.6331182626%29%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28%282.6331182626%29%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20%282.6331182626%29%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.6331182626%29%20%5Cright%29%7D%7D%20%3D%202.5813870091%20" alt="LaTeX: x_{2} = (2.6331182626) - \frac{- \frac{161 (2.6331182626)^{3}}{500} + \sin{\left((2.6331182626) \right)} + 5}{- \frac{483 (2.6331182626)^{2}}{500} + \cos{\left((2.6331182626) \right)}} = 2.5813870091 " data-equation-content=" x_{2} = (2.6331182626) - \frac{- \frac{161 (2.6331182626)^{3}}{500} + \sin{\left((2.6331182626) \right)} + 5}{- \frac{483 (2.6331182626)^{2}}{500} + \cos{\left((2.6331182626) \right)}} = 2.5813870091 " />
<img class="equation_image" title=" x_{3} = (2.5813870091) - \frac{- \frac{161 (2.5813870091)^{3}}{500} + \sin{\left((2.5813870091) \right)} + 5}{- \frac{483 (2.5813870091)^{2}}{500} + \cos{\left((2.5813870091) \right)}} = 2.5803664606 " src="/equation_images/%20x_%7B3%7D%20%3D%20%20%282.5813870091%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20%282.5813870091%29%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28%282.5813870091%29%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20%282.5813870091%29%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.5813870091%29%20%5Cright%29%7D%7D%20%3D%202.5803664606%20" alt="LaTeX: x_{3} = (2.5813870091) - \frac{- \frac{161 (2.5813870091)^{3}}{500} + \sin{\left((2.5813870091) \right)} + 5}{- \frac{483 (2.5813870091)^{2}}{500} + \cos{\left((2.5813870091) \right)}} = 2.5803664606 " data-equation-content=" x_{3} = (2.5813870091) - \frac{- \frac{161 (2.5813870091)^{3}}{500} + \sin{\left((2.5813870091) \right)} + 5}{- \frac{483 (2.5813870091)^{2}}{500} + \cos{\left((2.5813870091) \right)}} = 2.5803664606 " />
<img class="equation_image" title=" x_{4} = (2.5803664606) - \frac{- \frac{161 (2.5803664606)^{3}}{500} + \sin{\left((2.5803664606) \right)} + 5}{- \frac{483 (2.5803664606)^{2}}{500} + \cos{\left((2.5803664606) \right)}} = 2.5803660657 " src="/equation_images/%20x_%7B4%7D%20%3D%20%20%282.5803664606%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20%282.5803664606%29%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28%282.5803664606%29%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20%282.5803664606%29%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.5803664606%29%20%5Cright%29%7D%7D%20%3D%202.5803660657%20" alt="LaTeX: x_{4} = (2.5803664606) - \frac{- \frac{161 (2.5803664606)^{3}}{500} + \sin{\left((2.5803664606) \right)} + 5}{- \frac{483 (2.5803664606)^{2}}{500} + \cos{\left((2.5803664606) \right)}} = 2.5803660657 " data-equation-content=" x_{4} = (2.5803664606) - \frac{- \frac{161 (2.5803664606)^{3}}{500} + \sin{\left((2.5803664606) \right)} + 5}{- \frac{483 (2.5803664606)^{2}}{500} + \cos{\left((2.5803664606) \right)}} = 2.5803660657 " />
<img class="equation_image" title=" x_{5} = (2.5803660657) - \frac{- \frac{161 (2.5803660657)^{3}}{500} + \sin{\left((2.5803660657) \right)} + 5}{- \frac{483 (2.5803660657)^{2}}{500} + \cos{\left((2.5803660657) \right)}} = 2.5803660657 " src="/equation_images/%20x_%7B5%7D%20%3D%20%20%282.5803660657%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B161%20%282.5803660657%29%5E%7B3%7D%7D%7B500%7D%20%2B%20%5Csin%7B%5Cleft%28%282.5803660657%29%20%5Cright%29%7D%20%2B%205%7D%7B-%20%5Cfrac%7B483%20%282.5803660657%29%5E%7B2%7D%7D%7B500%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.5803660657%29%20%5Cright%29%7D%7D%20%3D%202.5803660657%20" alt="LaTeX: x_{5} = (2.5803660657) - \frac{- \frac{161 (2.5803660657)^{3}}{500} + \sin{\left((2.5803660657) \right)} + 5}{- \frac{483 (2.5803660657)^{2}}{500} + \cos{\left((2.5803660657) \right)}} = 2.5803660657 " data-equation-content=" x_{5} = (2.5803660657) - \frac{- \frac{161 (2.5803660657)^{3}}{500} + \sin{\left((2.5803660657) \right)} + 5}{- \frac{483 (2.5803660657)^{2}}{500} + \cos{\left((2.5803660657) \right)}} = 2.5803660657 " />
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