% lect10_1: Polynomial evaluation

p = [1 -12.1 40.59 -17.015 -71.95 35.88]
% Find f(9)
polyval(p,9)
% Plot f(x) for -1.5<=x<=6.7
x = -1.5:0.1:6.7;
y = polyval(p,x);
plot(x, y)