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Using the formula for Newton's method gives \begin{equation*}x_{n+1} = x_{n} - \frac{- \frac{613 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 8}{- \frac{1839 x_{n}^{2}}{1000} - \sin{\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{613 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 8}{- \frac{1839 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.4284133776\end{equation*} \begin{equation*}x_{2} = (2.4284133776) - \frac{- \frac{613 (2.4284133776)^{3}}{1000} + \cos{\left((2.4284133776) \right)} + 8}{- \frac{1839 (2.4284133776)^{2}}{1000} - \sin{\left((2.4284133776) \right)}} = 2.2949301161\end{equation*} \begin{equation*}x_{3} = (2.2949301161) - \frac{- \frac{613 (2.2949301161)^{3}}{1000} + \cos{\left((2.2949301161) \right)} + 8}{- \frac{1839 (2.2949301161)^{2}}{1000} - \sin{\left((2.2949301161) \right)}} = 2.2880639721\end{equation*} \begin{equation*}x_{4} = (2.2880639721) - \frac{- \frac{613 (2.2880639721)^{3}}{1000} + \cos{\left((2.2880639721) \right)} + 8}{- \frac{1839 (2.2880639721)^{2}}{1000} - \sin{\left((2.2880639721) \right)}} = 2.2880463257\end{equation*} \begin{equation*}x_{5} = (2.2880463257) - \frac{- \frac{613 (2.2880463257)^{3}}{1000} + \cos{\left((2.2880463257) \right)} + 8}{- \frac{1839 (2.2880463257)^{2}}{1000} - \sin{\left((2.2880463257) \right)}} = 2.2880463255\end{equation*}

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\begin{question}Use Newton's method to find the first 5 approximations of the solution to the equation $\cos{\left(x \right)}= \frac{613 x^{3}}{1000} - 8$ using $x_0=3$. 
    \soln{9cm}{Using the formula for Newton's method gives
\begin{equation*}x_{n+1} =  x_{n} - \frac{- \frac{613 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 8}{- \frac{1839 x_{n}^{2}}{1000} - \sin{\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{613 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 8}{- \frac{1839 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.4284133776\end{equation*}
\begin{equation*}x_{2} =  (2.4284133776) - \frac{- \frac{613 (2.4284133776)^{3}}{1000} + \cos{\left((2.4284133776) \right)} + 8}{- \frac{1839 (2.4284133776)^{2}}{1000} - \sin{\left((2.4284133776) \right)}} = 2.2949301161\end{equation*}
\begin{equation*}x_{3} =  (2.2949301161) - \frac{- \frac{613 (2.2949301161)^{3}}{1000} + \cos{\left((2.2949301161) \right)} + 8}{- \frac{1839 (2.2949301161)^{2}}{1000} - \sin{\left((2.2949301161) \right)}} = 2.2880639721\end{equation*}
\begin{equation*}x_{4} =  (2.2880639721) - \frac{- \frac{613 (2.2880639721)^{3}}{1000} + \cos{\left((2.2880639721) \right)} + 8}{- \frac{1839 (2.2880639721)^{2}}{1000} - \sin{\left((2.2880639721) \right)}} = 2.2880463257\end{equation*}
\begin{equation*}x_{5} =  (2.2880463257) - \frac{- \frac{613 (2.2880463257)^{3}}{1000} + \cos{\left((2.2880463257) \right)} + 8}{- \frac{1839 (2.2880463257)^{2}}{1000} - \sin{\left((2.2880463257) \right)}} = 2.2880463255\end{equation*}
}

\end{question}

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\begin{document}\begin{question}(10pts) The question goes here!
    \soln{9cm}{The solution goes here.}

\end{question}\end{document}

HTML for Canvas

<p> <p>Use Newton's method to find the first 5 approximations of the solution to the equation  <img class="equation_image" title=" \displaystyle \cos{\left(x \right)}= \frac{613 x^{3}}{1000} - 8 " src="/equation_images/%20%5Cdisplaystyle%20%5Ccos%7B%5Cleft%28x%20%5Cright%29%7D%3D%20%5Cfrac%7B613%20x%5E%7B3%7D%7D%7B1000%7D%20-%208%20" alt="LaTeX:  \displaystyle \cos{\left(x \right)}= \frac{613 x^{3}}{1000} - 8 " data-equation-content=" \displaystyle \cos{\left(x \right)}= \frac{613 x^{3}}{1000} - 8 " />  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>

HTML for Canvas

<p> <p>Using the formula for Newton's method gives
 <img class="equation_image" title=" x_{n+1} =  x_{n} - \frac{- \frac{613 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 8}{- \frac{1839 x_{n}^{2}}{1000} - \sin{\left(x_{n} \right)}}   " src="/equation_images/%20x_%7Bn%2B1%7D%20%3D%20%20x_%7Bn%7D%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20x_%7Bn%7D%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28x_%7Bn%7D%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20x_%7Bn%7D%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28x_%7Bn%7D%20%5Cright%29%7D%7D%20%20%20" alt="LaTeX:  x_{n+1} =  x_{n} - \frac{- \frac{613 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 8}{- \frac{1839 x_{n}^{2}}{1000} - \sin{\left(x_{n} \right)}}   " data-equation-content=" x_{n+1} =  x_{n} - \frac{- \frac{613 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 8}{- \frac{1839 x_{n}^{2}}{1000} - \sin{\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{613 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 8}{- \frac{1839 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.4284133776 " src="/equation_images/%20x_%7B1%7D%20%3D%20%20%283.0000000000%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20%283.0000000000%29%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28%283.0000000000%29%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20%283.0000000000%29%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28%283.0000000000%29%20%5Cright%29%7D%7D%20%3D%202.4284133776%20" alt="LaTeX:  x_{1} =  (3.0000000000) - \frac{- \frac{613 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 8}{- \frac{1839 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.4284133776 " data-equation-content=" x_{1} =  (3.0000000000) - \frac{- \frac{613 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 8}{- \frac{1839 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.4284133776 " /> 
 <img class="equation_image" title=" x_{2} =  (2.4284133776) - \frac{- \frac{613 (2.4284133776)^{3}}{1000} + \cos{\left((2.4284133776) \right)} + 8}{- \frac{1839 (2.4284133776)^{2}}{1000} - \sin{\left((2.4284133776) \right)}} = 2.2949301161 " src="/equation_images/%20x_%7B2%7D%20%3D%20%20%282.4284133776%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20%282.4284133776%29%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.4284133776%29%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20%282.4284133776%29%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28%282.4284133776%29%20%5Cright%29%7D%7D%20%3D%202.2949301161%20" alt="LaTeX:  x_{2} =  (2.4284133776) - \frac{- \frac{613 (2.4284133776)^{3}}{1000} + \cos{\left((2.4284133776) \right)} + 8}{- \frac{1839 (2.4284133776)^{2}}{1000} - \sin{\left((2.4284133776) \right)}} = 2.2949301161 " data-equation-content=" x_{2} =  (2.4284133776) - \frac{- \frac{613 (2.4284133776)^{3}}{1000} + \cos{\left((2.4284133776) \right)} + 8}{- \frac{1839 (2.4284133776)^{2}}{1000} - \sin{\left((2.4284133776) \right)}} = 2.2949301161 " /> 
 <img class="equation_image" title=" x_{3} =  (2.2949301161) - \frac{- \frac{613 (2.2949301161)^{3}}{1000} + \cos{\left((2.2949301161) \right)} + 8}{- \frac{1839 (2.2949301161)^{2}}{1000} - \sin{\left((2.2949301161) \right)}} = 2.2880639721 " src="/equation_images/%20x_%7B3%7D%20%3D%20%20%282.2949301161%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20%282.2949301161%29%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.2949301161%29%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20%282.2949301161%29%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28%282.2949301161%29%20%5Cright%29%7D%7D%20%3D%202.2880639721%20" alt="LaTeX:  x_{3} =  (2.2949301161) - \frac{- \frac{613 (2.2949301161)^{3}}{1000} + \cos{\left((2.2949301161) \right)} + 8}{- \frac{1839 (2.2949301161)^{2}}{1000} - \sin{\left((2.2949301161) \right)}} = 2.2880639721 " data-equation-content=" x_{3} =  (2.2949301161) - \frac{- \frac{613 (2.2949301161)^{3}}{1000} + \cos{\left((2.2949301161) \right)} + 8}{- \frac{1839 (2.2949301161)^{2}}{1000} - \sin{\left((2.2949301161) \right)}} = 2.2880639721 " /> 
 <img class="equation_image" title=" x_{4} =  (2.2880639721) - \frac{- \frac{613 (2.2880639721)^{3}}{1000} + \cos{\left((2.2880639721) \right)} + 8}{- \frac{1839 (2.2880639721)^{2}}{1000} - \sin{\left((2.2880639721) \right)}} = 2.2880463257 " src="/equation_images/%20x_%7B4%7D%20%3D%20%20%282.2880639721%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20%282.2880639721%29%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.2880639721%29%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20%282.2880639721%29%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28%282.2880639721%29%20%5Cright%29%7D%7D%20%3D%202.2880463257%20" alt="LaTeX:  x_{4} =  (2.2880639721) - \frac{- \frac{613 (2.2880639721)^{3}}{1000} + \cos{\left((2.2880639721) \right)} + 8}{- \frac{1839 (2.2880639721)^{2}}{1000} - \sin{\left((2.2880639721) \right)}} = 2.2880463257 " data-equation-content=" x_{4} =  (2.2880639721) - \frac{- \frac{613 (2.2880639721)^{3}}{1000} + \cos{\left((2.2880639721) \right)} + 8}{- \frac{1839 (2.2880639721)^{2}}{1000} - \sin{\left((2.2880639721) \right)}} = 2.2880463257 " /> 
 <img class="equation_image" title=" x_{5} =  (2.2880463257) - \frac{- \frac{613 (2.2880463257)^{3}}{1000} + \cos{\left((2.2880463257) \right)} + 8}{- \frac{1839 (2.2880463257)^{2}}{1000} - \sin{\left((2.2880463257) \right)}} = 2.2880463255 " src="/equation_images/%20x_%7B5%7D%20%3D%20%20%282.2880463257%29%20-%20%5Cfrac%7B-%20%5Cfrac%7B613%20%282.2880463257%29%5E%7B3%7D%7D%7B1000%7D%20%2B%20%5Ccos%7B%5Cleft%28%282.2880463257%29%20%5Cright%29%7D%20%2B%208%7D%7B-%20%5Cfrac%7B1839%20%282.2880463257%29%5E%7B2%7D%7D%7B1000%7D%20-%20%5Csin%7B%5Cleft%28%282.2880463257%29%20%5Cright%29%7D%7D%20%3D%202.2880463255%20" alt="LaTeX:  x_{5} =  (2.2880463257) - \frac{- \frac{613 (2.2880463257)^{3}}{1000} + \cos{\left((2.2880463257) \right)} + 8}{- \frac{1839 (2.2880463257)^{2}}{1000} - \sin{\left((2.2880463257) \right)}} = 2.2880463255 " data-equation-content=" x_{5} =  (2.2880463257) - \frac{- \frac{613 (2.2880463257)^{3}}{1000} + \cos{\left((2.2880463257) \right)} + 8}{- \frac{1839 (2.2880463257)^{2}}{1000} - \sin{\left((2.2880463257) \right)}} = 2.2880463255 " /> 
</p> </p>