Graph y = -sin x for- x 2. On the same screen, graph for h = 1, 0.5, 0.3, and 0.1. Then, in

Graph y = -sin x for-π ≤ x ≤ 2π. On the same screen, graph

for h = 1, 0.5, 0.3, and 0.1. Then, in a new window, try h = -1, -0.5, and -0.3. What happens as h→ 0⁺? As h→ 0^-? What phenomenon is being illustrated here?

y cos (x + h) h COS X