Homework Help: Calculus 1

Posted by Olivia on Monday, October 31, 2011 at 7:53pm.

Use Newton's method to approximate the root of the equation x^3+x+2=0 with initial guess x1=-1 gives:

Calculus 1 - Damon, Monday, October 31, 2011 at 8:39pm
Using trig get:

Xn+1 = Xn - Yn/Y'n
where
Y = x^3 + x + 2
Y' = 3x^2 + 1
for x = -1
Y = -1-1+2 = 0 well how embarrassing, we guessed it exactly
Y' = 4 irrelevant

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