Pre-Calc Polynomial Question! Please help
Favorites|Homepage
Subscriptions | sitemap
HOME > > Pre-Calc Polynomial Question! Please help

Pre-Calc Polynomial Question! Please help

[From: ] [author: ] [Date: 12-05-27] [Hit: ]
-Not necessary rational root but a real root.The reasoning for this is that the y value at x = 1 is negative and the y value at x = 2 is positive. Therefore, if the graph is continuous between the interval [1,2], then the curve actually crosses the x-axis and therefore must have a real root in the said interval.......
If p(x) is a polynomial such that P(1) = -1 and P(2) = 3, must p(x) = 0 have a rational root between x =1 and x = 2? Justify your answer.

-
Not necessary rational root but a real root.

The reasoning for this is that the y value at x = 1 is negative and the y value at x = 2 is positive. Therefore, if the graph is continuous between the interval [1,2], then the curve actually crosses the x-axis and therefore must have a real root in the said interval.
1
keywords: Calc,Pre,help,Question,Polynomial,Please,Pre-Calc Polynomial Question! Please help
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .