Unit Test #40

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

What is the amplitude of the function y = sin x + 1? A. 1
B. -1
C. -2
D. 0
Answer 1:

 

Q2:

 

What is the period of the function y = cos 2x ?

A. π/2
B. π
C. 2π
D. 1

Answer 2:

 

Q3:

 

Which of the following functions are undefined for x = 90° and x = 270°? A. y = sin x
B. y = cos x
C. y = tan x
D. y = tan(x + 30)
Answer 3:

 

Q4:

 

The point (270°, -1) lies on which of the following curves?
I. y = 2sin x
II. y = 2 cos x
III. y = cos 2x
 
A. I only
B. II only
C. III only
D. I and III only
Answer 4:

 

Q5:

 

For this sketch to be part of the cosine function, the y-axis would pass through:

A. P
B. Q
C. R 
D. S
Answer 5:

 

Q6:

 

Which of the following points would lie on the graph of 
y = -cos x°
A. (π/2, 0)
B. (π, 0)
C. (0, 0)
D. (2π, 0)
Answer 6:

 

Q7:

 

cos q° = -0.4
cos (360° - q°) is equal to:

A. -0.4
B. 0.4
C. -0.6
D. 0.6
Answer 7:

 

Q8:

 

Which of the following points would lie on the graph of y = sin(x - 45) A. (-45, 0)
B. (45, 0.5)
C. (135, 1) 
D. (135, -1)
Answer 8:

 

Q9:

 

Which of the following graphs would pass through the origin (0, 0)?

A. y = -sin 2x

B. y = sin x + 2

C. y =sin(x + 30)

D. y =2sin x + 1

Answer 9:

 

Q10:

 

For what values of x between 0 and 2π is the function

y = tan x undefined?  

A. 0 and π

B. 0 and 3π/ 2

C. π/ 2 and 3π/ 2

D. π/ 2 and π

Answer 10: