Finding the intersection of a function with its derivative

2 vues (au cours des 30 derniers jours)
Sebastian Ciuban
Sebastian Ciuban le 15 Déc 2013
Commenté : Sebastian Ciuban le 15 Déc 2013
I have this code:
x=sym('x'); f=2*sin(log(x)).^2; g=diff(f); h1=ezplot(f); set(h1,'Color','red') hold on ezplot(g) grid on
Now, how I can find the value of the points where they intersect?

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Wayne King
Wayne King le 15 Déc 2013
Modifié(e) : Wayne King le 15 Déc 2013
How about:
syms x
f=2*sin(log(x)).^2;
g=diff(f);
solve(f-g) % or solve(f==g)
  3 commentaires
Sebastian Ciuban
Sebastian Ciuban le 15 Déc 2013
I have tried that but I wasn't sure it was correct :)
Sebastian Ciuban
Sebastian Ciuban le 15 Déc 2013
That is the thing that I want to know :). The value of all points where those 2 curves intersect

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