I keep getting an error message on this code, I dont know what the problem is. Keeps saying the expression is invalid

>>t = [0:10];

>>v1 = @t (2cos(t)-sin(t))*25*exp(-t);

>>plot(t,v1);

Answer 1

[Star Strider]

You need to:

1. Put parentheses around the ‘t’ after the ‘@’ operator;
2. use element-wise operations in your ‘v1’ anonymous function;
3. call ‘v1’ as a function in your plot call.

Try this:

t = [0:10];
v1 = @(t) (2*cos(t)-sin(t))*25.*exp(-t); 
plot(t,v1(t));

EDIT —

Also, you need to provide operators (such as ‘*’ and ‘.*’), since MATLAB does not recognise implied multiplication.

[Reyly Bonilla]

Perfect, Thank you

[Star Strider]

My pleasure.

If my Answer helped you solve your problem, please Accept it!