How can I know the the size of an inline or anonymous vectorial expression?

I need to know if there is a way to know the length/size of a inline expression. In the example, the expression inside the inline is '[(t/2)*u2+u2*t; u2]', which has length 2, I need a command that returns that value for any vector inside the function.

F=inline('[(t/2)*u2+u2*t; u2]', 't', 'u2')

Answer 1

[José-Luis]

 nargin(F)

Please accept an answer if it helped you.

[Sean de Wolski]

Assuming size meant number of inputs and not size of the output array. Output size is not necessarily static so can't be measured without trial and error.