How to plot a single variable function with constraints

10 次查看（过去 30 天）
Mihai Giurca
Mihai Giurca 2020-3-20
评论： Huy Phan Dang 2021-7-19
Hello, I am trying to plot f(x) = 4 - x*sin(x) with constraints x>=6, x<=9 and log(x)>= -1. I tried using meshgrid but the graph came out wrong + it was in the 3rd dimension. Can anyone tell me how I should go about plotting a simple function with these constraints? Thank you!
  3 个评论
显示 1更早的评论
Mihai Giurca
Mihai Giurca 2020-3-20
I'm honestly not sure, my professor gave me these constraints and I'm not sure what the log is supposed to mean.
Huy Phan Dang
Huy Phan Dang 2021-7-19
log(x) or lg(x) can mean log 10 of x, my education system alway use lg(x) for log 10 of x as shortcut so it might be what your professor meant

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Ameer Hamza
Ameer Hamza 2020-3-20
f = @(x) 4 - x*sin(x);
fplot(f, [6 9]);
Matt J
Matt J 2020-3-20
编辑：Matt J 2020-3-20
You can assign NaN to anything you don't want plotted. Example,
x=linspace(0,2,1000);
f=sin(x);
f( 0.5<=x & x<=1)=nan;
plot(x,f);

类别

在 Help Center 和 File Exchange 中查找有关 Log Plots 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

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

Start Hunting!

Translated by