How do I plot parabolas and other functions in MATLAB?

22 次查看（过去 30 天）
Joseph Percsy
Joseph Percsy 2013-3-15
编辑： Adam Danz 2024-11-6
I'm trying to plot x2 +9y2 = 36 in MATLAB, but it just doesn't want to work, even if I split it up to 1/3sqrt(36 − x2) and −1/3sqrt(36 − x2)
I'm having trouble understanding what x=5:.5:5 means as well.
The second half of the question is y =3/2sin(2x +3) (I've already graphed this easily), and I need to find simultaneous solutions with the above function. Is ginput good enough for this?

请先登录，再回答此问题。

采纳的回答

Youssef Khmou
Youssef Khmou 2013-3-15
编辑：Adam Danz 2024-11-6
Ran in:
hi Joseph,
the expression means : variable=beginning:step:end , but 5:.5:5 is constant its 5 then . you can also plot the parabola just the way you did to the second equation :
x=-10:0.1:10;
y=sqrt((36-x.^2)/9);
plot(x,y)
Warning: Imaginary parts of complex X and/or Y arguments ignored.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Exploration 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by