4.4 Additional Formulas

Additional formulas added in the 2018 revision.

Lessons

• 4.4.1 a/b - (na - 1)/(nb - 1)
• 4.4.2 Factorizations
• 4.4.3 Sum of the Reciprocals of Triangular Numbers
• 4.4.4 Geometric and Harmonic Means
• 4.4.5 Distance Between a Point and a Line
• 4.4.6 Distance Between Two Parallel Lines