What is the syntax for defining a Heaviside function in MATLAB?

[adnan jahan]

Dear Fellows
I need to define a function "f" in MATLAB as
f is a heaviside unit step function

I did it as

f = heaviside[abs(-4)]

but it is not working as I required.

 

[Hootenanny]

Dear Fellows
I need to define a function "f" in MATLAB as
f is a heaviside unit step function

I did it as

f = heaviside[abs(-4)]

but it is not working as I required.

The "heaviside" function is part of the symbolic maths toolbox and as such, requires a symbolic argument. Therefore, you need to modify your expression thus:

heaviside(sym(abs(-4))

 

[Pythagorean]

If it's required you write it yourself, you're going to have to give us your code if you want troubleshooting help.