Horner’s method - XP Math - Forums

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 01-13-2007 #1 hyderman Guest   Posts: n/a Horner’s method The Horner’s method is an algorithm that evaluates polynomials. The following pseudocode shows how to use this method to find the value of anxn + an-1xn-1 + . . . + a1x + a0 at x = c. procedure Horner(c, a0, a1, a2, . . . , an : real numbers) y := an for i := 1 to n y := y × c + an-i end {y = ancn + an-1cn-1 + . . . + a1c + a0} (a) Evaluate x2 + 5x + 3 at x = 2 by working through each step of the algorithm. (b) Exactly how many multiplications and additions are used by this algorithm to evaluate a polynomial of degree n at x = c? (Do not count additions used to increment the loop variable.) please help me in this ... i am not sure how to solve that thanx
 01-13-2007 #2 Sillysidley   Join Date: Oct 2006 Posts: 822 what grade are you in? ummmm. i have no clue about the question __________________ .
 01-13-2007 #3 puppydog Guest   Posts: n/a i would have to say high school!!! that is scary!!!!
 01-14-2007 #4 Temperal Guest   Posts: n/a Oh, a first grader could solve this problem... A first grader with an IQ of three thousand and nine, that is! I think you should go to Mr. Hui for this. I doubt the middle schoolers that compose the majority of this forum could begin to understand what you're talking about. I can't, at least
 01-22-2007 #5 Scion   Join Date: Nov 2006 Posts: 437 i know you should put it in big fonts like THis __________________
 01-22-2007 #6 Temperal Guest   Posts: n/a What? What are you talking about? Is this spam? It looks an awful lot like it.
03-18-2007   #7
Smzrterthanu
Guest

Posts: n/a

Quote:
 Originally Posted by hyderman The Horner’s method is an algorithm that evaluates polynomials. The following pseudocode shows how to use this method to find the value of anxn + an-1xn-1 + . . . + a1x + a0 at x = c. procedure Horner(c, a0, a1, a2, . . . , an : real numbers) y := an for i := 1 to n y := y × c + an-i end {y = ancn + an-1cn-1 + . . . + a1c + a0} (a) Evaluate x2 + 5x + 3 at x = 2 by working through each step of the algorithm. (b) Exactly how many multiplications and additions are used by this algorithm to evaluate a polynomial of degree n at x = c? (Do not count additions used to increment the loop variable.) please help me in this ... i am not sure how to solve that thanx
Nothing to be scared about until you are on a bunch of various forums and see hyderman asking same question as a n00b. Seriously, it is precalculus mathematics. It is usually too tedious to use ever in my mind.

 03-18-2007 #8 Temperal Guest   Posts: n/a And you say you do 6th grade math, you little liar.
 03-18-2007 #9 Sillysidley   Join Date: Oct 2006 Posts: 822 I can't understand most of this thing.. __________________ .
 03-18-2007 #10 Smzrterthanu Guest   Posts: n/a Well I just read a precalculus book a while back. That doesn't count when I apply to highschool, and it hardly counts when you talk to people online since precalc and other subjects vary. I really bet since Horner's Method has lots to do with synthetic division some smart genius got to learn it in algebra 1. Lucky genius. But it is usually in precalc I think I learned from the people I have encountered. Last edited by Smzrterthanu; 03-18-2007 at 05:21 PM.. Reason: Realized I need more info.

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