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4. Let f(x) = -5x – 2x² + 4x +14. (a) Show that the equation f(x)= 0 has a unique root a in (-2,-1]. (b) Find the Newton
Posted: Thu May 12, 2022 10:23 am
by answerhappygod
- 4 Let F X 5x 2x 4x 14 A Show That The Equation F X 0 Has A Unique Root A In 2 1 B Find The Newton 1 (26.75 KiB) Viewed 28 times
4. Let f(x) = -5x – 2x² + 4x +14. (a) Show that the equation f(x)= 0 has a unique root a in (-2,-1]. (b) Find the Newton's iterative formula for solving the equation f(x)=0. [Give the formula in the form x g(x.-) where g(x,-1) and h(x-1) are polynomial functions.] h(x-) (c) Show that the sequence obtained by the iterative formula in (b) will converge to a for any initial guess x, in (-2,-1]. (d) Hence, with x, =-1, estimate the value of a correct to 4 decimal places.