# Newton's Method

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• Aug 6th 2010, 09:12 AM
bobsanchez
Newton's Method
Use Newton's method to approximate the indicated root of the equation correct to six decimal places.

x^4+x-4=0, [1,2]

Okay, so the answer I got for this was 1.283764, however I don't believe that is correct. Newton's method is straightforward enough, so I'm assuming I plugged something in wrong or make a careless error...
• Aug 6th 2010, 09:15 AM
Archie Meade
Quote:

Originally Posted by bobsanchez
Use Newton's method to approximate the indicated root of the equation correct to six decimal places.

x^4+x-4=0, [1,2]

Okay, so the answer I got for this was 1.283764, however I don't believe that is correct. Newton's method is straightforward enough, so I'm assuming I plugged something in wrong or make a careless error...

Your answer for the positive root is very accurate!
• Aug 6th 2010, 09:26 AM
bobsanchez
That's quite odd, because it was marked wrong on a quiz... :0
• Aug 6th 2010, 11:03 AM
Archie Meade
Quote:

Originally Posted by bobsanchez
That's quite odd, because it was marked wrong on a quiz... :0

To 6 decimal places "of accuracy", it's 1.283782,

maybe that's the problem.