There are plenty of self help books out there that offer formulas for success. Now, there’s one that literally offers equations and mathematical models for everything from dieting and money, to marriage and conflict resolution. It’s called The Calculus of Happiness: How a Mathematical Approach to Life Adds Up to Health, Wealth and Love . Author and Wellesley College math professor, Oscar Fernandez, admits that solving your problems was only half the reason he wrote the book. Fernandez says the U