Two small arches have the shape of parabolas. The first is the graph of f(x) = 1 – x² for –1 < x < 1 and the second is the graph of g(x) = 4– (x – 4)² for 2

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter3: Polynomial And Rational Functions
Section3.1: Quadratic Functions And Models
Problem 2E: The quadratic function f(x)=a(xh)2+k is in standard form. (a) The graph of f is a parabola with...
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Two small arches have the shape of parabolas. The first is the graph
of f(x) = 1 – x² for –1 < x < 1 and the second is the graph of g(x) =
4– (x – 4)² for 2 <x< 6. A board is placed on top of these arches so it
rests on both (Figure 21). What is the slope of the board? Hint: Find the
tangent line to y – f(x) that intersects y – 8(x) in exactly one point.
%3D
FIGURE 21
Transcribed Image Text:Two small arches have the shape of parabolas. The first is the graph of f(x) = 1 – x² for –1 < x < 1 and the second is the graph of g(x) = 4– (x – 4)² for 2 <x< 6. A board is placed on top of these arches so it rests on both (Figure 21). What is the slope of the board? Hint: Find the tangent line to y – f(x) that intersects y – 8(x) in exactly one point. %3D FIGURE 21
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