Error using taylor to find Maclaurin polynomials

Hi I have some problem with using the taylor function, this is what I did

syms x f=exp(x^2); taylor(f,5,0)

I'm want to find the fourth degree of Maclaurin polynomials with a=0

but I received this error

****************************************************

Error using sym/taylor (line 104)

Argument 'x' failed validation

@(x)isa(x,'sym')||(ischar(x)&&~any(strcmpi(x,{'Order','ExpansionPoint','OrderMode','Absolute','Relative'}))).

Error in question3 (line 5)

taylor(f,5,0)

****************************************************

The line 104 does not exist in my matlab equation

Answer 1

[Mischa Kim]

Samious, how about

 syms x 
 f  = exp(x^2);
 ts = taylor(f, x, 0, 'Order', 5)

[Samious]

it worked! thank :D