NAME DATE PERIOD 4-5 Practice - SD308
NAME
DATE
PERIOD
4-5 Practice
Graphing Other Trigonometric Functions
Locate the vertical asymptotes, and sketch the graph of each function.
1. y = -3 tan x
y 2
( ) 2. y = -2 cot 2x + -3
y
2
-2 - 0 2 x -2
-2 - 0 -2
2 x
3. y = csc x + 3
y 8 7 6 5 4 3 2
-3
-1 0
2
-2
3 2
( ) 4. y = sec -3x + ? 1
y
4 3 2 1
-3
-1 0
-3 -4
3
Identify the damping factor f(x) of the function. Then use a graphing calculator to sketch the graphs of f(x), -f(x), and the given function in the same viewing window. Describe the behavior of the graph.
5. y = -12 x cos 2x f(x) = -12 x; the amplitude of the function is
decreasing as x approaches 0
6. y = - -32 x sin - 2x f(x) = - -32 x; the amplitude of the function is
decreasing as x approaches 0
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
[-3, 3] scl:
2
by
[-10,
10]
scl:
1
[-3, 3] scl:
2
by
[-10,
10]
scl:
1
7. MUSIC A guitar string is plucked at a distance of 0.6 centimeter above its resting
position and then released, causing vibration. The damping constant of the guitar
string is 1.8, and the note produced has a frequency of 105 cycles per second.
a. Write a trigonometric function that models the motion of the string.
y = 0.6e-1.8t cos 210t
b. Determine the amount of time t that it takes the string to be damped so that
-0.24 y 0.24. 0.5 s
Chapter 4
28
Glencoe Precalculus
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