I get an error and what caused it? - Function Plotting

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I get an error. What caused it and how do I fix it?
Here my code:
t = -5:0.1:5;
y = ((2.*cos(x)+exp(-0.4.*x))./(0.2.*x+exp(-0.2.*x))) + ((4.*x)./3);
plot(t,y);
Edit: Typo correction.

采纳的回答

KSSV
KSSV 2022-1-6
Are you looking for this?
x = -5:0.1:5;
y = ((2.*cos(x)+exp(-0.4.*x))./(0.2.*x+exp(-0.2.*x))) + ((4.*x)./3);
plot(x,y);
  4 个评论
KSSV
KSSV 2022-1-6
You can just print the values and see.
a = -5:0.1:5 ; % this creates numbers between -5 and 5 with step size 0.1
diff(a)
ans = 1×100
0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000 0.1000
Also have a look on linspace.
b = linspace(-5,5,5)
b = 1×5
-5.0000 -2.5000 0 2.5000 5.0000
If you want 5 as the step/ difference. YEs use:
c = -5:5:5
c = 1×3
-5 0 5
cikalekli
cikalekli 2022-1-6
Your explanation was so fluently perfect.
I am appreciated with your help.
Bless you...

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