Generate diagram in linear scale

I defined a polynomia;

P = [1 10 -13 -118 120]

I want to generate a diagram in linear scale of that polynomial in range from -100 to 100

How can I do it?

Answer 1

[Abderrahim. B]

Hi!

See these 2 methods:

P = [1 10 -13 -118 120] ;

Method 1:

figure
plot(-100:100, polyval(P, -100:100))

Method 2:

myPoly = @(p)P(1)*p.^4 + P(2)*p.^3 -P(3)*p.^2 -P(4)*p.^1 + P(5) ;
plot(-100:100, myPoly(-100:100))

Answer 2

[Alan Stevens]

See

help polyval