Use Newton's method to find the first 5 approximations of the solution to the equation LaTeX:  \displaystyle \cos{\left(x \right)}= \frac{121 x^{3}}{500} - 2 using LaTeX:  \displaystyle x_0=1 .

Using the formula for Newton's method gives LaTeX:  x_{n+1} =  x_{n} - \frac{- \frac{121 x_{n}^{3}}{500} + \cos{\left(x_{n} \right)} + 2}{- \frac{363 x_{n}^{2}}{500} - \sin{\left(x_{n} \right)}}   Using LaTeX:  \displaystyle x_0 = 1 and LaTeX:  \displaystyle n = 0,1,2,3, and LaTeX:  \displaystyle 4 gives: LaTeX:  x_{1} =  (1.0000000000) - \frac{- \frac{121 (1.0000000000)^{3}}{500} + \cos{\left((1.0000000000) \right)} + 2}{- \frac{363 (1.0000000000)^{2}}{500} - \sin{\left((1.0000000000) \right)}} = 2.4662487077 LaTeX:  x_{2} =  (2.4662487077) - \frac{- \frac{121 (2.4662487077)^{3}}{500} + \cos{\left((2.4662487077) \right)} + 2}{- \frac{363 (2.4662487077)^{2}}{500} - \sin{\left((2.4662487077) \right)}} = 1.9880369659 LaTeX:  x_{3} =  (1.9880369659) - \frac{- \frac{121 (1.9880369659)^{3}}{500} + \cos{\left((1.9880369659) \right)} + 2}{- \frac{363 (1.9880369659)^{2}}{500} - \sin{\left((1.9880369659) \right)}} = 1.9069744285 LaTeX:  x_{4} =  (1.9069744285) - \frac{- \frac{121 (1.9069744285)^{3}}{500} + \cos{\left((1.9069744285) \right)} + 2}{- \frac{363 (1.9069744285)^{2}}{500} - \sin{\left((1.9069744285) \right)}} = 1.9047128843 LaTeX:  x_{5} =  (1.9047128843) - \frac{- \frac{121 (1.9047128843)^{3}}{500} + \cos{\left((1.9047128843) \right)} + 2}{- \frac{363 (1.9047128843)^{2}}{500} - \sin{\left((1.9047128843) \right)}} = 1.9047111416