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Local extrema of a function

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ILoveMath
ILoveMath 2022-4-27
编辑： Image Analyst 2022-4-27
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.

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回答（1 个）

David Hill
David Hill 2022-4-27
p=[.1,-1.2,0,10];
r=roots(polyder(p))

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