Visualizing Quaternions --- Errata

Corrections to the First Printing

• Foreword: Page xxiii: Line 16: The phrase "enables him take you..." should be "enables him to take you"...
• Chapter 02: Pages 24 and 25: Figures 2.8 and 2.9 should have been printed in color. Color versions of these pages in pdf format will soon be available here.
• Page 51: The equation at the top of the page is the sum of squares of the top row of Eq. (6.8), and therefore the plus signs in front of (q₂)² and (q₃)² should of course be minus signs. (Thanks to John McCormack.)
• Page 58: The polar form of a complex number is not `` r cos(theta) + i sin(theta), '' but `` r cos(theta) + i r sin(theta)'' (Thanks to Jeff Boyd.)