How to get result as string from curve fitting?

As shown, I want to get result as string. (Linear model Poly1 : ~~~~) But there is no option for get it.

what should I do??

Answer 1

[Walter Roberson]

fstring = evalc(f);

[JINSOL.KIM]

evalc function didn't work...

[Walter Roberson]

fstring = evalc('f');

Answer 2

[Ramesh Kudalippalliyalil]

Thanks