MATLAB Help

[_brady_]

I'll post the code first then explain what I want:

<font class="small">Code:</font><hr /><pre> <font color="blue">if</font> ???
F=laplace(e);
<font color="blue">else</font>
F=e;
<font color="blue">end</font></pre><hr />


My problem is where the question marks are. I want to essentially say: if e is a function of t then perform the laplace transform on e, if not then F is just equal to e.

Is there a way to ask if e is a function of t?

Such as if I input before the above if statement:

syms t
e=exp(t)

Then I want Matlab to recognize e is dependent on t and then to perform Laplace.

On the other hand if I say

e=0

I want Matlab to just set F=e

Thank you

[Andy Ross]

Findsym lists the variables for you.

A simple hack is: if diff(e,'t')~=0; F=laplace(e); else F=e; end

[_brady_]

[ QUOTE ]
Findsym lists the variables for you.

A simple hack is: if diff(e,'t')~=0; F=laplace(e); else F=e; end

[/ QUOTE ]

Makes perfect sense.

Thank you very much.