Consider the graph of the function f (x) = x² - x - 42. (a) Find the equation of the secant line joining the points (-5, -12), and (7, 0). (b) Use the Mean Value Theorem to determine a point c in the interval (-5, 7) such that the tangent line at c is parallel to the secant line. (C) Find the equation of the tangent line through c. (d) Use a graphing utility to graph f, the secant line, and the tangent line. 10 10 30 20 30

Advanced Engineering Mathematics
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Author:Erwin Kreyszig
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Consider the graph of the function f (x) = x - x - 42.
(a) Find the equation of the secant line joining the points (-5, -12), and (7, 0).
(b) Use the Mean Value Theorem to determine a point c in the interval (-5, 7) such that the tangent line at c is parallel to the secant line.
(c) Find the equation of the tangent line through c.
(d) Use a graphing utility to graph f, the secant line, and the tangent line.
10
10
-30 -20 -1O
20
30
-30 -20
-10
30
20
30
-50
-50
10
10
-30
-20
-10
10
20
30
-30
-20
-10
20
30
-20
-3
-30
-40
-40
A50
/50
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Transcribed Image Text:Consider the graph of the function f (x) = x - x - 42. (a) Find the equation of the secant line joining the points (-5, -12), and (7, 0). (b) Use the Mean Value Theorem to determine a point c in the interval (-5, 7) such that the tangent line at c is parallel to the secant line. (c) Find the equation of the tangent line through c. (d) Use a graphing utility to graph f, the secant line, and the tangent line. 10 10 -30 -20 -1O 20 30 -30 -20 -10 30 20 30 -50 -50 10 10 -30 -20 -10 10 20 30 -30 -20 -10 20 30 -20 -3 -30 -40 -40 A50 /50 Need Help? Read It
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