Use Newton's method to find the first 5 approximations of the solution to the equation LaTeX:  \displaystyle \cos{\left(x \right)}= \frac{739 x^{3}}{1000} - 1 using LaTeX:  \displaystyle x_0=1 .

Using the formula for Newton's method gives LaTeX:  x_{n+1} =  x_{n} - \frac{- \frac{739 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 1}{- \frac{2217 x_{n}^{2}}{1000} - \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{739 (1.0000000000)^{3}}{1000} + \cos{\left((1.0000000000) \right)} + 1}{- \frac{2217 (1.0000000000)^{2}}{1000} - \sin{\left((1.0000000000) \right)}} = 1.2619944115 LaTeX:  x_{2} =  (1.2619944115) - \frac{- \frac{739 (1.2619944115)^{3}}{1000} + \cos{\left((1.2619944115) \right)} + 1}{- \frac{2217 (1.2619944115)^{2}}{1000} - \sin{\left((1.2619944115) \right)}} = 1.2215374231 LaTeX:  x_{3} =  (1.2215374231) - \frac{- \frac{739 (1.2215374231)^{3}}{1000} + \cos{\left((1.2215374231) \right)} + 1}{- \frac{2217 (1.2215374231)^{2}}{1000} - \sin{\left((1.2215374231) \right)}} = 1.2204098371 LaTeX:  x_{4} =  (1.2204098371) - \frac{- \frac{739 (1.2204098371)^{3}}{1000} + \cos{\left((1.2204098371) \right)} + 1}{- \frac{2217 (1.2204098371)^{2}}{1000} - \sin{\left((1.2204098371) \right)}} = 1.2204089741 LaTeX:  x_{5} =  (1.2204089741) - \frac{- \frac{739 (1.2204089741)^{3}}{1000} + \cos{\left((1.2204089741) \right)} + 1}{- \frac{2217 (1.2204089741)^{2}}{1000} - \sin{\left((1.2204089741) \right)}} = 1.2204089741