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How can I plot two functions in the same graph?

6 vues (au cours des 30 derniers jours)
Wenchen Liu
Wenchen Liu le 1 Nov 2022
Modifié(e) : Torsten le 1 Nov 2022
I have a code like this:
fplot(@(x) cosh(x))
hold on
p(x) = 0.6671x^3-1.7921x^2+2.7580x-0.089
fplot(@(x) p(x))
hold off
since p(x) is a more complex function. And when I try to run the code, the command shows "Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters,
or other syntax error. To construct matrices, use brackets instead of parentheses."
I don't know how to fix for this. Please me, thank you!

Réponse acceptée

Torsten le 1 Nov 2022
Modifié(e) : Torsten le 1 Nov 2022
hold on
p = @(x)0.6671*x.^3-1.7921*x.^2+2.7580*x-0.089;
hold off

Plus de réponses (1)

Jim Riggs
Jim Riggs le 1 Nov 2022
Modifié(e) : Jim Riggs le 1 Nov 2022
Try this:
fplot(@(x) cosh(x));
hold on
fplot(@(x) 0.6671x^3-1.7921x^2+2.7580x-0.089);


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