Challenge 3: F-Curve Handles and Vector Graphics' Own Bezier Handles — Solution Walkthrough

The answer:

Per this chapter's own material, an F-Curve's own keyframe handles use
the exact same underlying handle concept Vector Graphics' own Chapter
3 covered for bezier curves on a 2D path — a handle controlling exactly
how sharply or gradually the curve bends near a specific point.

Why the same underlying mechanism applies in both cases:

In Vector Graphics, a smooth point's own handles control how a 2D path
curves through space — longer handles producing a broader curve,
shorter handles producing a tighter one. An F-Curve's own keyframe
handles control how a value curves through time in exactly the same
way — a longer handle producing a more gradual ease, a shorter handle
producing a snappier, more abrupt transition.

Why this is genuinely the same concept, just applied to a different
axis:

Vector Graphics' own curves plot position in 2D space; the Graph
Editor's own F-Curves plot a value against time instead. In both
cases, a bezier handle is doing the identical job — shaping exactly how
a curve bends near a specific point — just with time standing in for
one of the two spatial dimensions a 2D path would otherwise use.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that F-Curve handles are correctly recognized as
the same underlying bezier-handle concept from Vector Graphics,
applied to a value-over-time curve rather than a 2D spatial path.