Unexpected Matlab Expression ?

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Natalie Brehaut
Natalie Brehaut 2017-9-11
评论： Jose Marques 2017-9-11
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
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Natalie Brehaut
Natalie Brehaut 2017-9-11
it is supposed to be an envelope to another function, I have tried to add .* in between but that comes up as unexpected MATLAB Operator
Natalie Brehaut
Natalie Brehaut 2017-9-11
I am supposed to code the function E(x)= plus or minus 3e^(-x/4)

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Jose Marques
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
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Natalie Brehaut
Natalie Brehaut 2017-9-11
THAT WORKED THANK YOU SO MUCH

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