Corrected in

Description

1.0.1

References: Misspelling of McGraw-Hill

References: Update PatrickJMT to Patrick Jones.

Picture Credits: the word “index” should not be on header line

1.0.2

Example 20.5 should read as “Find the nearest point on the line $y=x-4$ to the parabola $y=x^2$, where both points have the same $x$-coordinate.”