how i plot this function

Question

muhammad asif 2020-9-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/602245-how-i-plot-this-function

评论： Star Strider 2020-9-30

采纳的回答： Star Strider

u(x,t)=t+sin(x-a*t)

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Star Strider 2020-9-30

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/602245-how-i-plot-this-function#answer_502639

在 MATLAB Online 中打开

One way, using the exact equation you posted:

syms x t 
a = 4.2;                                        % Use Appropriate Value
u(x,t) = t+sin(x-a*t);
figure
fsurf(u, [- pi pi  0 1])

and another possibility:

x = linspace( ... );                            % Create Vector
t = linspace( ... );                            % Create Vector
[X,T] = ndgrid(x,t);
u = @(x,t) t+sin(x-a.*t);
figure
mesh(X, T, u(X,T))
grid on

.

2 个评论
显示无隐藏无

muhammad asif 2020-9-30

111.png

group should be like that sir.

Star Strider 2020-9-30

在 MATLAB Online 中打开

There appears to be missing data. I cannot guess what they are.

Try this:

x = linspace(-2*pi, 2*pi, 25);                            % Create Vector
t = linspace(-2*pi, 2*pi, 25);                            % Create Vector
a = 1;
[X,T] = ndgrid(x,t);
u = @(x,t) t+sin(x-a.*t);
figure
plot(t, u(X,T))
hold on
plot(t, x, 'k', 'LineWidth',2)
hold off
grid on