Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.1: Postulates For The Integers (optional)
Problem 27E: Let x and y be in Z, not both zero, then x2+y2Z+.
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Environment of Forests
Following the lead of the National Wildlife Federation, the Department of the Interior of a South American country began to record an index of environmental quality that measured progress and decline in the environmental quality of its forests. The index for the years 2004 through 2014 is approximated by the function wheret = 0 corresponds to 2004. Find the intervals where the function I is increasing and the intervals where it is decreasing using interval notation.
Transcribed Image Text:I(t)
=
1,3
3
-
52
+2
+86
(0 ≤t ≤ 10)
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