Use Newton's method to find the first 5 approximations of the solution to the equation LaTeX:  \displaystyle \cos{\left(x \right)}= \frac{123 x^{3}}{1000} - 3 using LaTeX:  \displaystyle x_0=3 .

Using the formula for Newton's method gives LaTeX:  x_{n+1} =  x_{n} - \frac{- \frac{123 x_{n}^{3}}{1000} + \cos{\left(x_{n} \right)} + 3}{- \frac{369 x_{n}^{2}}{1000} - \sin{\left(x_{n} \right)}}   Using LaTeX:  \displaystyle x_0 = 3 and LaTeX:  \displaystyle n = 0,1,2,3, and LaTeX:  \displaystyle 4 gives: LaTeX:  x_{1} =  (3.0000000000) - \frac{- \frac{123 (3.0000000000)^{3}}{1000} + \cos{\left((3.0000000000) \right)} + 3}{- \frac{369 (3.0000000000)^{2}}{1000} - \sin{\left((3.0000000000) \right)}} = 2.6213324513 LaTeX:  x_{2} =  (2.6213324513) - \frac{- \frac{123 (2.6213324513)^{3}}{1000} + \cos{\left((2.6213324513) \right)} + 3}{- \frac{369 (2.6213324513)^{2}}{1000} - \sin{\left((2.6213324513) \right)}} = 2.5939015685 LaTeX:  x_{3} =  (2.5939015685) - \frac{- \frac{123 (2.5939015685)^{3}}{1000} + \cos{\left((2.5939015685) \right)} + 3}{- \frac{369 (2.5939015685)^{2}}{1000} - \sin{\left((2.5939015685) \right)}} = 2.5937681993 LaTeX:  x_{4} =  (2.5937681993) - \frac{- \frac{123 (2.5937681993)^{3}}{1000} + \cos{\left((2.5937681993) \right)} + 3}{- \frac{369 (2.5937681993)^{2}}{1000} - \sin{\left((2.5937681993) \right)}} = 2.5937681961 LaTeX:  x_{5} =  (2.5937681961) - \frac{- \frac{123 (2.5937681961)^{3}}{1000} + \cos{\left((2.5937681961) \right)} + 3}{- \frac{369 (2.5937681961)^{2}}{1000} - \sin{\left((2.5937681961) \right)}} = 2.5937681961