Unexpected Matlab Expression ?
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I am new to coding and am unsure why my code does not work it says "Unexpected MATLAB expression" for the 3 in my code.
This is my code E(x)= [-1 1] 3 . * exp (1) . ^ ((-x)./4)
Any help is appreciated
4 个评论
Jose Marques
2017-9-11
Should be something between [-1 1] and 3.* ? What this represents?
Jose Marques
2017-9-11
Maybe it is better to explain what the expression means.
Natalie Brehaut
2017-9-11
Natalie Brehaut
2017-9-11
采纳的回答
Jose Marques
2017-9-11
Natalie, try this:
E= [-1 1] * 3 *( exp (1) .^ ((-x)/4))
E will be a matrix 1x2 that first element is positive value and second will be the negative value
7 个评论
Natalie Brehaut
2017-9-11
Jose Marques
2017-9-11
Are you using the matrix E after that? Post you intire code; thus, we can be helpfull
Natalie Brehaut
2017-9-11
编辑：Natalie Brehaut
2017-9-11
Jose Marques
2017-9-11
A tip: you must use .* to element wise multiplication: https://www.mathworks.com/help/matlab/ref/times.html
Jose Marques
2017-9-11
Natalie, have you ever use the for loop? Do you just wanna two values for E?
x=1:0.1:10;
for i=1:size(x,2)
y(i) = 3 * exp (1) .^ ((-x(i))/4) * sin (2 * x(i));
E= [-1 1] * 3 *( exp (1) .^ ((-x(i))/4));
end
plot(y)
Natalie Brehaut
2017-9-11
Jose Marques
2017-9-11
Nice work!
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