Hi can someone help.
Q. Determine whether these equations have positive roots
$\displaystyle i)\ s^3 + 6s^2 + 11s + 6 = 0$
$\displaystyle ii)\ s^3 + s^2 - 8s - 12 = 0$
Cheers
I used calculus to guess the root. There's different ways you can find roots. If you find just one, you can find the others easily. There are a set of equations you can find here:
Vičte's formulas - Wikipedia, the free encyclopedia
Also, view this thread:
http://www.mathhelpforum.com/math-he...tml#post381368