Precalculus: A Unit Circle Approach
2nd Edition
ISBN: 9780321825391
Author: Ratti
Publisher: PEARSON
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Chapter A.1, Problem 8E
To determine
To classify the number as rational or irrational.
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Find the area of the shaded region.
(a)
5-
y
3
2-
(1,4)
(5,0)
1
3
4
5
6
(b)
3 y
2
Decide whether the problem can be solved using precalculus, or whether calculus is required. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, use a graphical or numerical approach to
estimate the solution.
STEP 1: Consider the figure in part (a). Since this region is simply a triangle, you may use precalculus methods to solve this part of the problem. First determine the height of the triangle and the length of the triangle's base.
height 4
units
units
base
5
STEP 2: Compute the area of the triangle by employing a formula from precalculus, thus finding the area of the shaded region in part (a).
10
square units
STEP 3: Consider the figure in part (b). Since this region is defined by a complicated curve, the problem seems to require calculus. Find an approximation of the shaded region by using a graphical approach. (Hint: Treat the shaded regi
as…
Solve this differential equation:
dy
0.05y(900 - y)
dt
y(0) = 2
y(t) =
Suppose that you are holding your toy submarine under the water. You release it and it begins to ascend. The
graph models the depth of the submarine as a function of time.
What is the domain and range of the function in the graph?
1-
t (time)
1 2
4/5 6 7
8
-2
-3
456700
-4
-5
-6
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d (depth)
-8
D: 00 t≤
R:
Chapter A.1 Solutions
Precalculus: A Unit Circle Approach
Ch. A.1 - In Exercises 1-4, write each of the following...Ch. A.1 - In Exercises 1-4, write each of the following...Ch. A.1 - In Exercises 1-4, write each of the following...Ch. A.1 - Prob. 4ECh. A.1 - Prob. 5ECh. A.1 - Prob. 6ECh. A.1 - Prob. 7ECh. A.1 - Prob. 8ECh. A.1 - In Exercises 5-10, classify each of the following...Ch. A.1 - Prob. 10E
Ch. A.1 - Prob. 11ECh. A.1 - Prob. 12ECh. A.1 - Prob. 13ECh. A.1 - Prob. 14ECh. A.1 - Prob. 15ECh. A.1 - Prob. 16ECh. A.1 - Prob. 17ECh. A.1 - Prob. 18ECh. A.1 - Prob. 19ECh. A.1 - Prob. 20ECh. A.1 - Prob. 21ECh. A.1 - Prob. 22ECh. A.1 - Prob. 23ECh. A.1 - Prob. 24ECh. A.1 -
In Exercises 25-38, rewrite each expression...Ch. A.1 - Prob. 26ECh. A.1 - Prob. 27ECh. A.1 - Prob. 28ECh. A.1 - Prob. 29ECh. A.1 - Prob. 30ECh. A.1 - Prob. 31ECh. A.1 - Prob. 32ECh. A.1 - Prob. 33ECh. A.1 - Prob. 34ECh. A.1 - Prob. 35ECh. A.1 - Prob. 36ECh. A.1 - Prob. 37ECh. A.1 - Prob. 38ECh. A.1 - Prob. 39ECh. A.1 - Prob. 40ECh. A.1 - Prob. 41ECh. A.1 - Prob. 42ECh. A.1 - Prob. 43ECh. A.1 - Prob. 44ECh. A.1 - Prob. 45ECh. A.1 - Prob. 46ECh. A.1 - Prob. 47ECh. A.1 - Prob. 48ECh. A.1 - Prob. 49ECh. A.1 - Prob. 50ECh. A.1 - Prob. 51ECh. A.1 - Prob. 52ECh. A.1 - Prob. 53ECh. A.1 - Prob. 54ECh. A.1 - Prob. 55ECh. A.1 - Prob. 56ECh. A.1 - Prob. 57ECh. A.1 - Prob. 58ECh. A.1 - Prob. 59ECh. A.1 - Prob. 60ECh. A.1 - Prob. 61ECh. A.1 - Prob. 62ECh. A.1 - Prob. 63ECh. A.1 - Prob. 64ECh. A.1 - Prob. 65ECh. A.1 - Prob. 66ECh. A.1 - Prob. 67ECh. A.1 -
In Exercises 59-68, evaluate each expression for...Ch. A.1 - Prob. 69ECh. A.1 - Prob. 70ECh. A.1 - Prob. 71ECh. A.1 - Prob. 72ECh. A.1 - Prob. 73ECh. A.1 - Prob. 74ECh. A.1 - Prob. 75ECh. A.1 - Prob. 76ECh. A.1 - Prob. 77ECh. A.1 - Prob. 78ECh. A.1 - Prob. 79ECh. A.1 - Prob. 80ECh. A.1 - Prob. 81ECh. A.1 - Prob. 82ECh. A.1 - Prob. 83ECh. A.1 - Prob. 84ECh. A.1 - Prob. 85ECh. A.1 - Prob. 86ECh. A.1 - Prob. 87ECh. A.1 - Prob. 88ECh. A.1 - Prob. 89ECh. A.1 - Prob. 90ECh. A.1 - Prob. 91ECh. A.1 - Prob. 92ECh. A.1 - Prob. 93ECh. A.1 - Prob. 94ECh. A.1 - Prob. 95ECh. A.1 - Prob. 96ECh. A.1 - Prob. 97ECh. A.1 - Prob. 98ECh. A.1 - Prob. 99ECh. A.1 - Prob. 100ECh. A.1 - Prob. 101ECh. A.1 - Prob. 102ECh. A.1 - Prob. 103ECh. A.1 - Prob. 104ECh. A.1 - Prob. 105ECh. A.1 - Prob. 106ECh. A.1 - Prob. 107ECh. A.1 - Prob. 108ECh. A.1 - Prob. 109ECh. A.1 - In Exercises 101-134, simplify each expression....Ch. A.1 - Prob. 111ECh. A.1 - Prob. 112ECh. A.1 - Prob. 113ECh. A.1 - Prob. 114ECh. A.1 - Prob. 115ECh. A.1 - Prob. 116ECh. A.1 - Prob. 117ECh. A.1 - Prob. 118ECh. A.1 - Prob. 119ECh. A.1 - Prob. 120ECh. A.1 - Prob. 121ECh. A.1 - Prob. 122ECh. A.1 - Prob. 123ECh. A.1 - Prob. 124ECh. A.1 - Prob. 125ECh. A.1 - Prob. 126ECh. A.1 - Prob. 127ECh. A.1 - Prob. 128ECh. A.1 - Prob. 129ECh. A.1 - Prob. 130ECh. A.1 - Prob. 131ECh. A.1 - Prob. 132ECh. A.1 - Prob. 133ECh. A.1 - Prob. 134ECh. A.1 - Prob. 135ECh. A.1 - Prob. 136ECh. A.1 - Prob. 137ECh. A.1 - Prob. 138ECh. A.1 - Prob. 139ECh. A.1 - Prob. 140ECh. A.1 - Prob. 141ECh. A.1 - Prob. 142E
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- Let F = V where (x, y, z) x2 1 + sin² 2 +z2 and let A be the line integral of F along the curve x = tcost, y = t sint, z=t, starting on the plane z = 6.14 and ending on the plane z = 4.30. Then sin(3A) is -0.598 -0.649 0.767 0.278 0.502 0.010 -0.548 0.960arrow_forwardLet C be the intersection of the cylinder x² + y² = 2.95 with the plane z = 1.13x, with the clockwise orientation, as viewed from above. Then the value of cos (₤23 COS 2 y dx xdy+3 z dzis 3 z dz) is 0.131 -0.108 -0.891 -0.663 -0.428 0.561 -0.332 -0.387arrow_forward2 x² + 47 The partial fraction decomposition of f(x) g(x) can be written in the form of + x3 + 4x2 2 C I where f(x) = g(x) h(x) = h(x) + x +4arrow_forward
- The partial fraction decomposition of f(x) 4x 7 g(x) + where 3x4 f(x) = g(x) = - 52 –10 12x237x+28 can be written in the form ofarrow_forward1. Sketch the following piecewise function on the graph. (5 points) x<-1 3 x² -1≤ x ≤2 f(x) = = 1 ४ | N 2 x ≥ 2 -4- 3 2 -1- -4 -3 -2 -1 0 1 -1- --2- -3- -4- -N 2 3 4arrow_forward2. Let f(x) = 2x² + 6. Find and completely simplify the rate of change on the interval [3,3+h]. (5 points)arrow_forward
- (x)=2x-x2 2 a=2, b = 1/2, C=0 b) Vertex v F(x)=ax 2 + bx + c x= Za V=2.0L YEF(- =) = 4 b (글) JANUARY 17, 2025 WORKSHEET 1 Solve the following four problems on a separate sheet. Fully justify your answers to MATH 122 ล T earn full credit. 1. Let f(x) = 2x- 1x2 2 (a) Rewrite this quadratic function in standard form: f(x) = ax² + bx + c and indicate the values of the coefficients: a, b and c. (b) Find the vertex V, focus F, focal width, directrix D, and the axis of symmetry for the graph of y = f(x). (c) Plot a graph of y = f(x) and indicate all quantities found in part (b) on your graph. (d) Specify the domain and range of the function f. OUR 2. Let g(x) = f(x) u(x) where f is the quadratic function from problem 1 and u is the unit step function: u(x) = { 0 1 if x ≥0 0 if x<0 y = u(x) 0 (a) Write a piecewise formula for the function g. (b) Sketch a graph of y = g(x). (c) Indicate the domain and range of the function g. X фирм where u is the unit step function defined in problem 2. 3. Let…arrow_forwardQuestion 1arrow_forward"P3 Question 3: Construct the accessibility matrix Passociated with the following graphs, and compute P2 and identify each at the various two-step paths in the graph Ps P₁ P₂arrow_forward
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