How do I correctly write the following function ?

I got to this, but I get an error :

 f=2.*x.*sin(6.*pi.*x+exp(2.*x.*cos(6.*pi.*x.)));
                    

Answer 1

[Ameer Hamza]

f=2.*x.*sin(6.*pi.*x+exp(2.*x.*cos(6.*pi.*x.)));
                                          %^ remove this dot

Correct is

f=2.*x.*sin(6.*pi.*x+exp(2.*x.*cos(6.*pi.*x)));

Answer 2

[VBBV]

@Iurie Obodeanov, Close the parenthesis for first term i.e. sin term , and remove the dot at the end of 2nd term as below

syms x 
                     %vv close                vv remove dot 
f(x)=2.*x.*sin(6.*pi.*x)+exp(2.*x.*cos(6.*pi.*x))     

f(x) =