Online Homework System Assignment Worksheet
9/22/06 - 3:38 PM
 

Name: ____________________________ Class: Mathematics 320-Differential Equations
Class #: ____________________________ Section #: ____________________________
Instructor: Atanas Stefanov Assignment: Quiz2


Question 1: (2 points)
Which of the following represents after completing the square, where is a non-zero constant, and , are any constants?
(a)
(b)
(c)
(d)
(e)

Question 2: (2 points)
The solutions to the quadratic equation are
(a)
(b) and
(c)
(d)
(e)

Question 3: (2 points)
Fill in the blanks:

Let be a product of complex numbers. Then the real part of is ____ and the imaginary part of is ____.


Question 4: (2 points)

Let be a product of complex numbers, where and are arbitrary real numbers. Which of the following is the real part of ?


(a)

(b)

(c)

(d)

(e)


Question 5: (2 points)

Which of the following are critical points of the function ? Check all that apply.


(a)

(b)

2

(c)

(d)

1

(e)

0


Question 6: (2 points)

The following equation is Euler’s Formula, where is an arbitrary real number:

An example of the use of this formula is . Using Euler's Formula, write in the standard form .


(a)

(b)

(c)

(d)

(e)


Question 7: (2 points)

Which of the following represents the expression after completing the square?


(a)

(b)

(c)

(d)

(e)


Question 8: (2 points)

The solutions of the quadratic equation are


(a)

(b)

(c)

(d)

(e)


Question 9: (2 points)
The function has a critical point at . Does does this give a local maximum, local minimum, or neither?
(a)local minimum
(b)local maximum
(c)neither

Question 10: (2 points)
Determine a critical value of the function .
(a)
(b)
(c)0
(d)
(e)