ploting 2d graph of a vector
8 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
adam hafzadi
le 14 Mai 2021
Modifié(e) : adam hafzadi
le 15 Mai 2021
Hey Friends,
I am trying to plot a vecotr (a solution of deritinal eqution) somting like those:
x(t)=Aexp(-3t)
y(t)=Bexp(2t)
Where A B are contecst ( so i am trying to see serveral function)
thanks a lot, Adam.
0 commentaires
Réponse acceptée
Chad Greene
le 14 Mai 2021
You've pretty much got it, but you'll need to define a range of t values, and a value for the constants A, and B. You also need to use the * symbol for multiplication.
t = 0:0.1:10; % a range of t values from 0 to 100, steps of 0.1
A = 1;
B = 2;
x=A*exp(-3*t);
y=B*exp(2*t);
plot(t,x)
hold on
plot(t,y)
legend('x(t)','y(t)')
You may also want to set the vertical scale to log scale:
set(gca,'yscale','log')
0 commentaires
Plus de réponses (1)
adam hafzadi
le 14 Mai 2021
2 commentaires
Chad Greene
le 14 Mai 2021
Oh, yes, that's a quirk of Matlab when you multiply or divide vectors. By default Matlab tries to do a "cross multiplication". To do "dot multiplication" instead, just put a period (.) in front of every multiplication symbol, like this:
t = -100:0.1:100; % a range of t values from -100 to 100, steps of 0.1
A = 1;
B = 2;
x=A.*exp(-2.*t)+B.*t.*exp(-2.*t);
y=A.*exp(2.*t)+B.*t.*exp(-2.*t)+B.*exp(-2.*t);
plot(t,x)
hold on
plot(t,y)
legend('x(t)','y(t)')
Voir également
Catégories
En savoir plus sur Line Plots dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!