Genre fiction also showed it could question reality in its 20th century forms, in spite of its fixed formulas, through the enquiries of the skeptical detective and the alternative realities of science fiction.

If you look at a dozen pecan pie recipes you will see there's no fixed formula.

Instead of trying to find a fixed formula that always works, let's make it learn from experience, case by case.

Ms. Kamsky said that her fees are structured around each deal and that there is no fixed formula.

I have no fixed formula.

That said, there's no fixed formula.

A non-prescription food with a "fixed formula" would be suitable because of the consistency of its preparation.

That the Lord's Prayer before communion is not referred to may be only because it is a fixed formula belonging to the structure of the rite.

Let F be an arbitrary fixed formula.

Since then, the expression has become a common phrase, indeed a "fixed formula".