Use Newton's method to find the roots of 2x^3−9x^2+12x+15. How do I handle the cases when x>3 and x<3.

Roselyn Daniel

Roselyn Daniel

Answered question

2022-07-19

Use Newton's method to find the roots of
2 x 3 9 x 2 + 12 x + 15
for x = 3, x < 3, and x > 3.

Answer & Explanation

neobuzdanio

neobuzdanio

Beginner2022-07-20Added 13 answers

Newton's method is only guaranteed to converge to a solution (that satisfies f ( x ) 0) if you start 'close enough'.
In this case the polynomial p has exactly one real root, and since p ( 1 ) = 18 , p ( 0 ) = 5, we see that it lies in ( 1 , 0 ).
Try starting at 1 2 for example.

Do you have a similar question?

Recalculate according to your conditions!

New Questions in Analysis

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?