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Problems with exp-functions

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Alexander Engman
Alexander Engman 2016-1-23
评论： Alexander Engman 2016-1-23
Hi!
I want to make a function of x.
This is my code:
x=(0:0.001:5); %x-values
f=2*x*exp(-x);
plot(x,f)
But MatLab is telling me:
Error using *
Inner matrix dimensions must agree.
What does this mean in this case and how do I solve it?

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回答（1 个）

Walter Roberson
Walter Roberson 2016-1-23
f=2*x.*exp(-x);

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