Sketch the graph of f with emphasis on concavity. Label asymptotes with their equations and important points with coordinates.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.1: Polynomial Functions Of Degree Greater Than
Problem 12E
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Sketch the graph of f with emphasis on concavity. Label asymptotes with their equations and important points with coordinates.
f'
f"
conclusions
(-∞, -1) -1 (-1,1)
+
+
+
0
+
1 (1, 2) 2
-
0
dne
1
dne
(2,3)
+
3 (3, +00)
0
+
t
+
Transcribed Image Text:f' f" conclusions (-∞, -1) -1 (-1,1) + + + 0 + 1 (1, 2) 2 - 0 dne 1 dne (2,3) + 3 (3, +00) 0 + t +
e
is continuous everywhere except at x = 2
f(-1)=-2, f(1) = 0,
f(3) = 5
lim
f(x) = -1, lim
f(x) = +1
2-2-
11-2+
lim [f(x) = (x+1)] = 0
1
2
(x,-1).
f'
+.
O
Idne
f!!
+
O
Idne
+
(1) then fis increasing in (-4, 1)
becaum, fix) > 0 in (-4,1)
increasing
Also, f'(x) >0 in (3,4) =) f is also in (3, d) U(-1,1)
^
fis increasing in (-α₁1) U (3,α) u (-1,1)
(2)
@f!(~) 2.0 in (-1,2) U(213)
a fis decreasing
in (1,2) 0 (2,3)
F"(x) >0 for all x = (- ~, -1) U (2/0)
F
f(x) 20 for all 2€ (-1, 2)
⇒ fis
(3)
ه و
(4)
+
(-1, 1)
lim fex) = -3,
2-22
3 را
2 را
-
3 3,4
O
+
+
f is concave down for all x = (-4,-1) U (2,4)
concave down forall: x=(-1,2)
(St) Also,
x =
(6) point of inflection are x= -1; 2;
+
are the point of extreama.
Transcribed Image Text:e is continuous everywhere except at x = 2 f(-1)=-2, f(1) = 0, f(3) = 5 lim f(x) = -1, lim f(x) = +1 2-2- 11-2+ lim [f(x) = (x+1)] = 0 1 2 (x,-1). f' +. O Idne f!! + O Idne + (1) then fis increasing in (-4, 1) becaum, fix) > 0 in (-4,1) increasing Also, f'(x) >0 in (3,4) =) f is also in (3, d) U(-1,1) ^ fis increasing in (-α₁1) U (3,α) u (-1,1) (2) @f!(~) 2.0 in (-1,2) U(213) a fis decreasing in (1,2) 0 (2,3) F"(x) >0 for all x = (- ~, -1) U (2/0) F f(x) 20 for all 2€ (-1, 2) ⇒ fis (3) ه و (4) + (-1, 1) lim fex) = -3, 2-22 3 را 2 را - 3 3,4 O + + f is concave down for all x = (-4,-1) U (2,4) concave down forall: x=(-1,2) (St) Also, x = (6) point of inflection are x= -1; 2; + are the point of extreama.
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