S (number of sunspots) 160 120 80 40 1960 1970 1980 1990 2000 2010 t (year)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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During this fifty-year period, are there any interval during which the average rate of change of sunspots with respect to time was positive? If so, when and explain how you know. If not, explain why not.

S
(number of sunspots)
160
120
80
40
1960 1970 1980 1990 2000
2010
t (year)
Transcribed Image Text:S (number of sunspots) 160 120 80 40 1960 1970 1980 1990 2000 2010 t (year)
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