Polynomial min/max using coefficients vector?

Hello Experts,

Consider I have polynomial and a vector p with it's coefficients. What function in Matlab gets such vector p and computes max and minimum.

Thanks a lot in advance!

I need both maximum and minimum.

Answer 1

[Thomas]

 Suppose you have a polynomial 
 x^3 - 2*x - 5

 c=sym2poly(x^3 - 2*x - 5) will give you the vector coefficients:
c =
          1.00             0         -2.00         -5.00

 minmax(sym2poly(x^3 - 2*x - 5))
ans =
         -5.00          1.00

minmax(sym2poly(polynomial)) will give you the minimum and maximum of the coeffiecients.

you can also use 'minmax' on vectors: http://www.mathworks.com/help/toolbox/nnet/ref/minmax.html

Hope this was useful

[Steve]

Thank you very much!!!!

It was my pleasure to get your answer, informative and smart!

[Steve]

I meant the extremum...sorry but maybe you didn't expressed myself right.