Why this function is wrong written
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My function is: funk1=3*((1-x).^2)*exp(-x.^2-(y+1).^2) and matlab send me and error but don't write where it is.
5 个评论
KSSV
2017-5-30
Show the full code.....
Dennis Semke
2017-5-30
Stephen23
2017-5-30
It works for me:
>> x = 2;
>> y = 3;
>> 3*((1-x).^2)*exp(-x.^2-(y+1).^2)
ans = 6.1835e-009
Whatever you are doing is causing an error.
Dennis Semke
2017-5-30
KSSV
2017-5-30
YOu can mesh plot it..look at my answer....it is a mesh plot.
采纳的回答
F = 3*((1-x).^2).*exp(-x.^2-(y+1).^2);
^ you need this .
Read about the difference here:
更多回答（3 个）
KSSV
2017-5-30
x=linspace(-3,3,49);
y=linspace(-3,3,49);
[X,Y] = meshgrid(x,y) ;
funk1=3*((1-X).^2).*exp(-X.^2-(Y+1).^2);
surf(X,Y,funk1)
Rik
2017-5-30
The error explains exactly what is wrong: "Error using * Inner matrix dimensions must agree."
You forgot the dot for element-wise multiplying before the exp.
x=linspace(-3,3,49);
y=linspace(-3,3,49);
funk1=3*((1-x).^2).*exp(-x.^2-(y+1).^2);
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