not sure how to do this question:

Approximate the zeros of each function(only gonna show one, the other i'll attempt)

f(x) = 1/4x3-2x2-2x+12

the smaller numbers are the powers

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- March 16th 2006, 05:54 PMimpreza02Polynomial Function
not sure how to do this question:

Approximate the zeros of each function(only gonna show one, the other i'll attempt)

f(x) = 1/4x3-2x2-2x+12

the smaller numbers are the powers - March 17th 2006, 12:17 AMCaptainBlackQuote:

Originally Posted by**impreza02**

so will have no more than three zeros. From the sketch we can see that

these will be close to and .

Now we will refine these estimates of the zeros using Newton Raphson

iteration. Which is the iteration:

Using our function gives:

For , this gives:

So the root near is .

For , this gives:

So the root near is .

For , this gives:

So the root near is .

RonL