Wrong equastion of XY dependence
2 次查看(过去 30 天)
显示 更早的评论
Hi I try to solve following problem.
I try to type following equastion of XY dependence:
x= [-5,15]
a= 1
b= 12
c= 2.4
r= 1
y= -1*(a-b*(((x)-r)).^4).*(exp(-1*c*((x)-r).^2))
figure
plot (x,y)
it should be this equation:
And it should have this shape of XY dependence
But it give me the wrong shape (like linear XY dependence).
Can anybody advise, where the mistake i?
Thank you
P.
0 个评论
采纳的回答
Mischa Kim
2014-8-7
编辑:Mischa Kim
2014-8-7
Use,
x = -5:0.1:15; % create a vector x, element spacing: 0.1
a = 1;
b = 12;
c = 2.4;
r = 1;
y = -1*(a-b*(((x)-r)).^4).*(exp(-1*c*((x)-r).^2));
figure
plot(x,y)
The only difference is in the first line. In your code you evaluate y only twice, at x = -5 and at x = 15.
更多回答(1 个)
David Sanchez
2014-8-7
Instead of your definition of x, try the folowing one:
x= -5:.01:15; % array of 2001 elements, your definition were a mere 2 element array
a= 1;
b= 12;
c= 2.4;
r= 1;
y= -1*(a-b*(((x)-r)).^4).*(exp(-1*c*((x)-r).^2));
figure
plot (x,y)
0 个评论
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!