ARTICLE SYNOPSIS ...Book Review: by John Sweeney An Easy Course in Using the HP-12C and Other Financial Calculators by Chris Coffin and Ted Wadman Grapevine Publications, Inc. Corvallis, Oregon 97339 Price: $18.00 There seems to be something about financial calculations that boggles minds. I've taught finance courses for years and I'd guess that less than 20% of introductory students finish with a solid working knowledge of the fundemental equation. Now Messrs. Coffin and Wadman have written a book whose great value is not its explanation of a particular calculator, but its graphic presentation and detailed...