Time and again this simple formula proves to be a constructive starting point for detailed discussion.

The formula has proved successful, and now the Island is attracting chefs who had never before given the area a second thought.

By January 2000, the formula had proved quite successful.

The original formula for the polymers proved too sticky under the hot Oklahoma sun.

They will offer competition if his formula proves a dead end.

They say no formula imposed from the top down will prove workable.

The formula proved unsuccessful as the Sox narrowly avoided a hundred losses in 1976.

The formula has proved successful, as the company gets requests to bid on more projects than it can handle.

But I don't have all the formulas to prove it.

The intuitive reading of this is obvious: every formula proves itself.