How to plot symbolic function with string specification?

Briefly I want to execute

syms x
f = x
fplot(f,'b','LineWidth',2)

but a little fancier. I want the specification to be a string that I just can add. For instance:

syms x
f = x

str = ['b','LineWidth',2];

fplot(f,str)

Unfortunately this outputs an error

Answer 1

[Steven Lord]

Store your options as a cell array and turn it into a comma-separated list when you call fplot.

syms x
f = x;
options = {'b','LineWidth',2};
fplot(f, options{:})

Answer 2

[KSSV]

May be you can consider using like below.

syms x ;
f = x ;
h = fplot(f) ;
h.LineWidth = 2 ;