Thread: plot of a function of time a matlab question

I have a question in the MATLAB
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could you please help me ?

Originally Posted by nezar

I have a question in the MATLAB

could you please help me ?

Code:

 
--> t=linspace(0,2,1000);
--> ii=3.*(1-e.^(-4.*t./1.3));
--> jj=3.*e.^(-4.*t./1.3).*(exp(0.5*4/1.3)-1);
--> kk=ii+(t>0.5).*(jj-ii);
--> plot(t,kk);

i don't no why he always give me error
Error in ==> nezar at 2
ii=3.*(1-e.^(-4.*t./1.3));

Originally Posted by nezar

i don't no why he always give me error
Error in ==> nezar at 2
ii=3.*(1-e.^(-4.*t./1.3));

Try replacing e.^ by exp

same thing give me error

Originally Posted by nezar

same thing give me error

Can you post all the relevant code?

CB

i open m-file and paste
t=linspace(0,2,1000);
ii=3.*(1-e.^(-4.*t./1.3));
jj=3.*e.^(-4.*t./1.3).*(exp(0.5*4/1.3)-1);
kk=ii+(t>0.5).*(jj-ii);
plot(t,kk);
and save the file by name and in command page enter nezar he give me
>> nezar
??? Undefined function or variable 'e'.

Error in ==> nezar at 2
ii=3.*(1-e.^(-4.*t./1.3));

Originally Posted by nezar

i open m-file and paste
t=linspace(0,2,1000);
ii=3.*(1-e.^(-4.*t./1.3));
jj=3.*e.^(-4.*t./1.3).*(exp(0.5*4/1.3)-1);
kk=ii+(t>0.5).*(jj-ii);
plot(t,kk);
and save the file by name and in command page enter nezar he give me
>> nezar
??? Undefined function or variable 'e'.

Error in ==> nezar at 2
ii=3.*(1-e.^(-4.*t./1.3));

yes finally i get the answer maybe i misunderstand
thank you you really nice man