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Issues plotting an equation.

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Brendan Clark
Brendan Clark 2021-4-6
编辑： VBBV 2021-4-6
I'm having difficultly getting an equation to run for a homework problem I'm working on. I'm hoping someone can help me get the equation to be functional, please don't help me complete the problem beyond that point.
My current code is
clear variables
clc
t=0:.5:5;
w_d=4;
for o=1
x=((10*exp(-o*t))*(cos(w_d*t)))-((0.2*exp(-o*t))*(sin(w_d*t)));
plot(x,t)
end
The error I'm receiving is
Error using *
Incorrect dimensions for matrix multiplication. Check
that the number of columns in the first matrix matches
the number of rows in the second matrix. To perform
elementwise multiplication, use '.*'.
Error in Untitled9 (line 6)
x=((10*exp(-o*t))*(cos(w_d*t)))-((0.2*exp(-o*t))*(sin(w_d*t)));
The homework problem is:
As mentioned previously, I only want help making the equation work. Thank you!

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采纳的回答

VBBV
VBBV 2021-4-6
编辑：VBBV 2021-4-6
%f true
clc
t=0:.5:5;
w_d=4;
o=1
x=(10*exp(-o*t).*(cos(w_d*t))-(0.2*exp(-o*t)).*(sin(w_d*t)));
plot(x,t)
Try above with element wise operator

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