Review the following concepts if needed:
 Number Systems Help
 Coordinates in One Dimension Help
 Coordinates in Two Dimensions Help
 The Slope of a Line in the Plane Help
 The Equation of a Line Help
 Loci in the Plane Help
 Trigonometry Review for Calculus Help
 Sets and Functions Help
 Graphs of Functions Help
 Plotting the Graph of a Function Help
 Composition of Functions Help
 The Inverse of a Function Help
 A Few Words About Logarithms and Exponentials Help
Calculus Basics Practice Test

Each of the following is a rational number. Write it as the quotient of two integers.

Plot the numbers on a real number line. Label each plotted point.

Sketch each of the following sets on a separate real number line.
(a) S = { x : ∣ x − 2∣ < 4}
(b) T = { t : t ^{2} + 1 = 5}
(c) U = { s : 2 s − 5 ≤ 3}
(d) V = { y : ∣6 y + 1∣ > 2}
(e) S = { x : x ^{2} + 3 < 6}
(f) T = { s : ∣ s ∣ = ∣ s + 1∣}

Plot each of the points on a pair of cartesian coordinate axes. Label each point.

Plot each of these planar loci on a separate set of axes.
(a) {( x , y ): y = 2 x ^{2} −3}
(b) ( x , y ): x ^{2} + y ^{2} = 9}
(c) y = x ^{3} + x
(d) x = y ^{3} + y
(e) x = y ^{2} − y ^{3}
(f) x ^{2} + y ^{4} = 3

Plot each of these regions in the plane.
(a) {( x , y ): x ^{2} + y ^{2} < 4}
(b) {( x , y ): y > x ^{2} }
(c) {( x , y ): y < x ^{3} }
(d) {( x , y ): x ≥ 2 y + 3}
(e) {( x , y ): y ≤ x + 1}
(f) {( x , y ): 2 x + y ≥ 1}

Calculate the slope of each of the following lines:
(a) The line through the points (−5, 6) and (2, 4)
(b) The line perpendicular to the line through (1, 2) and (3, 4)
(c) The line 2 y + 3 x = 6
(d) The line
(e) The line through the points (1, 1) and (−8, 9)
(f) The line x − y = 4

Write the equation of each of the following lines.
(a) The line parallel to 3 x + 8 y = −9 and passing through the point (4, −9).
(b) The line perpendicular to x + y = 2 and passing through the point (−4, −8).
(c) The line passing through the point (4, 6) and having slope −8.
(d) The line passing through (−6, 4) and (2, 3).
(e) The line passing through the origin and having slope 6.
(f) The line perpendicular to x = 3 y − 7 and passing through (−4, 7).

Graph each of the lines in Exercise 8 on its own set of axes. Label your graphs.

Which of the following is a function and which is not? Give a reason in each case.
(a) f assigns to each person his biological father
(b) g assigns to each man his dog
(c) h assigns to each real number its square root
(d) f assigns to each positive integer its cube
(e) g assigns to each car its driver
(f) h assigns to each toe its foot
(g) f assigns to each rational number the greatest integer that does not exceed it
(h) g assigns to each integer the next integer
(i) h assigns to each real number its square plus six

Graph each of these functions on a separate set of axes. Label your graph.

Calculate each of the following trigonometric quantities.
(a) sin(8π/3)
(b) tan(−5π/6)
(c) sec(7π/4)
(d) csc(13π/4)
(e) cot(−15π/4)
(f) cos(−3π/4)

Calculate the left and right sides of the twelve fundamental trigonometric identities for the values θ = /3 and ψ = − /6, thus confirming the identities for these particular values.

Sketch the graphs of each of the following trigonometric functions.
(a) f ( x ) = sin 2 x
(b) g ( x ) = cos( x + π/2)
(c) h ( x ) = tan(− x + π )
(d) f ( x ) = cot(3 x + π)
(e) g ( x ) = sin( x /3)
(f) h ( x ) = cos(−π + [ x /2])

Convert each of the following angles from radian measure to degree measure .
(a) θ = π/24
(b) θ = − π/3
(c) θ = 27π/12
(d) θ = 9π/16
(e) θ = 3
(f) θ = −5

Convert each of the following angles from degree measure to radian measure .
(a) θ = 65°
(b) θ = 10°
(c) θ = −75°
(d) θ = −120°
(e) θ = π°
(f) θ = 3.14°

For each of the following pairs of functions, calculate f ο g and g ο f .

Consider each of the following as functions from to and say whether the function is invertible. If it is, find the inverse with an explicit formula.
(a) f ( x ) = x ^{3} + 5
(b) g ( x ) = x ^{2} − x
(c) , where sgn x is +1 if x is positive, −1 if x is negative, 0 if x is 0.
(d) f ( x ) = x ^{5} + 8
(e) g ( x ) = e ^{−3 x}
(f) h ( x ) = sin x
(g) f ( x ) = tan x
(h) g ( x ) = (sgn x ) · x ^{2} , where sgn x is +1 if x is positive, −1 if x is negative, 0 if x is 0.

For each of the functions in Exercise 18, graph both the function and its inverse in the same set of axes.

Determine whether each of the following functions, on the given domain S , is invertible. If it is, then find the inverse explicitly.
(a) f ( x ) = x ^{2} , S = [2, 7]
(b) g ( x ) = In x , S = [1, ∞)
(c) h ( x ) = sin x , S = [0, π/2]
(d) f ( x ) = cos x , S = [0, π]
(e) g ( x ) = tan x , S = (−π/2, π/2)
(f) h ( x ) = x ^{2} , S = [−2, 5]
(g) f ( x ) = x ^{2} − 3 x , S = [4, 7]

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