The growth of a red oak tree is approximated by the function G = -0.003t3 + 0.139t2 + 0.457t - 0.824, 2 ≤ t ≤ 34 where G is the height of the tree (in feet) and t is its age (in years).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 36E
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Given the function, how can the following problems be solved? 

(b) Estimate the age of the tree when it is growing most rapidly. This point is called the point of diminishing returns because the increase in size will be less with each additional year. (Round your answer
to the nearest year.)
yr
(c) Using calculus, the point of diminishing returns can be found by finding the vertex of the parabola
y = -0.009t2 + 0.278t + 0.457.
Find the vertex of this parabola. (Round your answer to two decimal places.)
(t, y) =
Transcribed Image Text:(b) Estimate the age of the tree when it is growing most rapidly. This point is called the point of diminishing returns because the increase in size will be less with each additional year. (Round your answer to the nearest year.) yr (c) Using calculus, the point of diminishing returns can be found by finding the vertex of the parabola y = -0.009t2 + 0.278t + 0.457. Find the vertex of this parabola. (Round your answer to two decimal places.) (t, y) =
The growth of a red oak tree is approximated by the function
G = -0.003t³ + 0.139t2 + 0.457 - 0.824, 2 ≤ t ≤ 34
where G is the height of the tree (in feet) and t is its age (in years).
Transcribed Image Text:The growth of a red oak tree is approximated by the function G = -0.003t³ + 0.139t2 + 0.457 - 0.824, 2 ≤ t ≤ 34 where G is the height of the tree (in feet) and t is its age (in years).
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