Using latex command with anonymous functions

I want to convert a bunch of simple symbolic expressions to latex

e.g.,

syms x;
B  = @(x)B(x)

latex(diff(B,x)) produces latex output

but

latex(B(x)) produces an error.

Of course, if I had

B = sym('B(x)')

latex(B(x))

would do what I want it to do, i.e., output B(x) but then

latex(B(y))

would produce an error

Answer 1

[Alexander]

In R2012a I can do this:

 >> syms x y B(x)
 >> latex(B(x))

 ans =

 B\!\left(x\right)

 >> latex(B(y))

 ans =

 B\!\left(y\right)

 >> latex(diff(B(x)))

 ans =

 \frac{\partial}{\partial x} B\!\left(x\right)

[Oleg Komarov]

I like this approach.

Answer 2

[Walter Roberson]

Perhaps

latex(char(B(x)))

Answer 3

[Matt Fig]

B = sym('B(x)');
latex(B)
latex(subs(B,'x','y'))

Answer 4

[Leo Simon]

Thanks to Matt and Walter for responses. Walter's answer didn't work; according to the documentation, latex requires a symbolic argument. Matt's answer did work, but I'd really like something more general if somebody has one, specifically, I'd much prefer to be able to define B as an anonymous function of the symbolic variable x, and then latex the output, e.g., i'd like to be able to write

syms x;
B(x) = @(x)B(x)

and have

latex(B(x))

return

B\left(x\right)

Obviously this doesn't happen, but I'm hoping that some modification of my proposed command would work.

[Walter Roberson]

latex( sym(char(B(x))) )

Answer 5

[Oleg Komarov]

Interesting case, do you define B in a recursive way on purpose?

However the error is clear, B doesn't exist at the moment of the call B(x).

To make it more clear:

syms x
f = @(input) B(input);

f(x)

Undefined function 'B' for input arguments of type 'sym'.
Error in @(input)B(input)

Answer 6

[Leo Simon]

Well, I've tried defining B as a symbolic variable first, but that doesn't help, e.g.

clear all ; syms x B ; f= @(input)B(input) ; f(x)

Which just generates the infuriating, opaque, ubiquitous message

??? Error using ==> mupadmex
Error in MuPAD command: DOUBLE cannot convert the input expression into a double array.
If the input expression contains a symbolic variable, use the VPA function instead.

So I'm not sure how to make B exist any other way?

[Matt Fig]

Leo, please comment on the answer you are engaging. Don't just keep adding 'answers' that aren't really answers to the OP. Thanks.

[Leo Simon]

Ok, sorry