Wednesday

August 20, 2014

August 20, 2014

Posted by **M** on Thursday, September 22, 2011 at 8:28pm.

f(x) = x^5 - 5x^4 +8x + 2

- pre calculus -
**Steve**, Friday, September 23, 2011 at 1:40pmCheck your notes for the technique of using synthetic division to find upper/lower bounds on roots.

If f(x)/(x-c) has all positive coefficients and c>0, c is an upper bound.

If f(x)/(x-c) has alternating coefficients and c<0, c is a lower bound

A little trial and error shows that

5 is an upper bound and -1 is a lower bound

**Related Questions**

Find the Bounds on the real zeros - Find the bounds on the real zeros of the ...

pre calculus - use the rational zeros theorem to find all the real zeros of the ...

pre-calculus - information is given about the polynomial f(x) whose coefficients...

Pre-Calculus-check answers - Find the number of possible negative real zeros for...

Pre-Calculus-check answers - Find the number of possible negative real zeros for...

Pre-calculus-check answers - Find the number of possible negative real zeros for...

pre-calculus - Find the number of possible negative real zeros for f(x)=6+x^4+2x...

pre calculus - use given info about a polynomial whose coefficients are real ...

pre-calculus - find a bound on the real zeros of the polynomial functions. f(x)=...

Pre-calculus - Sorry i wrote the last question wrong, it was suppose to be ...