O which interval is the average rate of change greater 0


Question: (a) Graph f(x) = x sin x for -10 ≤ x ≤ 10.

(b) How many zeros does f(x) have on this interval?

(c) Is f increasing or decreasing at x = 1? At x = 4?

(d) On which interval is the average rate of change greater: 0 ≤ x ≤ 2 or 6 ≤ x ≤ 8?

(e) Is the instantaneous rate of change greater at x = -9 or x = 1?

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Mathematics: O which interval is the average rate of change greater 0
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