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April 21, 2015

April 21, 2015

Posted by **kookay** on Wednesday, February 10, 2010 at 9:36am.

please. im begging!

I. Use Newton’s method to approximate the real root to 4 decimal places.

1. X^3-3X+1=0

2 . X^3-X-2=0

3. 2X-3SINX=0

- college math -
**dongo**, Wednesday, February 10, 2010 at 9:52amWell, this is simple, you just have to form the derivative of the presumed functions.

e.g. d/dx[2x-3sinx]=:g(x); [2x-3sinx]=:f(x)

Afterwards, you have to numericaly take the following algorithm as many times as necessary in order to be yielded the wanted result:

x_(n+1)= x_n-f(x_n)/g(x_n)

Bear in mind that this is an iteration, i.e. of repeated application of this algorithms comes to a number whose 4th decimal has not changed concerning the preceding one, you'll be done.

- college math -
**kookay**, Wednesday, February 10, 2010 at 10:06amhello dongo. First of all thank you but I'm sorry I can't understand it because the question is from my older sister who has a Flu right now and she ask me to post it on the internet so somebody can answer it. Can you solve it for her? please? She will be very very thankful to you.

- college math -
**dongo**, Wednesday, February 10, 2010 at 10:10amThere's absolutely no use in doing so. Even though she's ill, I am really convinced about her managing to solve this, supplied with the correct algorithms. (In fact, I do ot understand why it is always about calculating. Proving the applicability of this algorithm would be way better... She can greet her profesor from me...)

- college math -
**kookay**, Wednesday, February 10, 2010 at 10:26amshe said thanks. i just want to help her. btw thank you very much!

- college calculus -
**jacques**, Wednesday, February 10, 2010 at 3:25pmFind the limit. If the limit doesn't exist, explain why. lim x approaches 5 x^2-3x-10/x^2-10x+25

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