Local extrema of a function

I have this so far:

clc;
syms x
f= 0.1*x.^3-1.2*x.^2+10;
fprintf('The function is x^3/10-(6*x^2)/5+10\n\n')
fx= diff(f,x);
[xc]= solve(fx); 
fprintf('The Critical points: \n');
disp([xc])

fplot(f)
grid on;

I want to display the local maximum and minimum as (x,y), but am unsure how to.

Answer 1

[David Hill]

p=[.1,-1.2,0,10];
r=roots(polyder(p))