Chapter 11:
Question 1
1 out of 1 points
In the InterContinental Hotel Group case study, the mathematical
model used to increase profits was based on
Selected
Answer:
Answers:
an optimization model that used multiple variables.
a simulation model that tri
Chapter 5:
Question 1
1 out of 1 points
In the Cabela's case study, what types of models helped the company
understand the value of customers, using a fivepoint scale?
Selected
Answer:
clustering and association
models
Answers:
reporting and association
Chapter 1:
Question 1
1 out of 1 points
All of the following may be viewed as decision support systems
EXCEPT
Selected
Answer:
a retail sales system that processes customer sales
transactions.
Answers:
an expert system to diagnose a medical condition.
a k
Chapter 3:
Question 1
1 out of 1 points
The "single version of the truth" embodied in a data warehouse such
as Capri Casinos' means all of the following EXCEPT
Selected
Answer:
Answers:
decision makers have unfettered access to all data in the
warehouse.
Discuss why scope control is important to preventing scoperelated problems on
information technology projects. Explain approaches for preventing scoperelated problems.
Hi all,
To understand the importance of scope control in IT projects, lets first unde
I like the examples you have given for IT Projects, those are very good examples of why
organizations must have quality measures in all the projects. I would like to add some of the
major reasons why so many IT projects tend to fail because of poor qualit
Your post about importance of Risk Management Plan is elaborative and helps me
understand what all should be part of the Risk Management Plan. As you said IT projects are
famous to find the risks at uncertain times and are very hard to avoid. Reading your
SEC. 25
the two functions
u(x, Y) =
x2  y2
2xy
and v ( x , y ) =
(x2 y2)2
(x2 y 2 p
+
+
are harmonic throughout any domain in the xy plane that does not contain the origin.
If two given functions u and v are harmonic in a domain L) and their firstorder
CHAP. 2
where grad u is the gradient vector
grad u = u,i
(2)
+ u, j.
Because u, and u, are zero everywhere in D, then, grad u is the zero vector at all
points on L. Hence it follows from equation (1) that the derivative d u l d s is zero along
L; and this
POLAR
COORDINATES
67
SEC. 22
and 0 exist everywhere in that neighborhood. Ifthose partial derivatives are continuous
at (ro, 6,) and satisfy the polar form
o the CauchyRiemann equations at (ro, go), then f'(zo) exists.
f
The derivative f '(zo) here can b
CHAP. 2
Evidently, then,
lim
( A X Ay)+(O,O)
,
Re
Aw
=
Az
lim
AY+O
v(x0. yo+ AY)  ~
AY
( ~ YO)
0 9
= vy (xo, YO)
and
Aw
lim
I m p (Ar,Ay)+(O,O) A2
lim
+A
~ ( ~ Yo 7
0
Ay+O
~ )U ( ~ 0YO)
,
= uy ( ~ 0 9
YO).
AY
Hence it follows from expression (3) that
respectively, it also shows that the real and imaginary components of a function of a
complex variable can have continuous partial derivatives of all orders at a point and
yet the function may not be differentiable there.
The function f ( 2 ) = 1z12 is co
SEC. 15
whenever
0 < I (x
+ i y )  (xo + YO) 1 < 6.
That is, limit (1) holds.
Let us now start with the assumption that limit (1) holds. With that assumption,
we know that, for each positive number E ,there is a positive number 6 such that
whenever
But
l
CHAP. 2
FIGURE 27
(See Fig. 27.) But the continuity of f at z0 ensures that the neighborhood lz  zol < 6
can be made small enough that the second of these inequalities holds. The continuity
of the composition g [ f (z)] is, therefore, established.
Theore
42
ANALYTIC
FUNCTIONS
CHAP. 2
Our final example here uses the images of horizontal lines to find the image of a
horizontal strip.
EXAMPLE 3. When w = eZ,the image of the infinite strip 0 5 y 5 rr is the upper
half v 2 0 of the w plane (Fig. 22). This is s
SEC. 12
MAPPINGS
37
EXAMPLE 1. According to Example 2 in Sec. 11, the mapping w = z2 can be
thought of as the transformation
from the xy plane to the u v plane. This form of the mapping is especially useful in
finding the images of certain hyperbolas.
It
32
COMPLEX
NUMBERS
CHAP. I
5. Let S be the open set consisting of all points z such that lzl < 1 or lz  21 < 1. State why
S is not connected.
6. Show that a set S is open if and only if each point in S is an interior point.
7. Determine the accumulation
EXAMPLES 27
SEC. g
EXAMPLE 3. The two values q (k = 0, 1) of
roots of & i, are found by writing
+
(J?+ i)1/2, which are the square
and (see Fig. 14)
I
FIGURE 14
Euler's formula (Sec. 6) tells us that
GO = h e x p ( i k )
= A (cos
1,
7r
 + i sin
"
12
12
SEC.
7
PRODUCTS QUOTIENTS EXPONENTIAL
AND
IN
FORM
17
geometrically obvious that
,n
i
and e i4n  1.

e in/2  i,
= 1,
Note, too, that the equation
is a parametric representation of the circle )zl = R, centered at the origin with radius
R. As the para
CHAP. I
and [see Exercise 2(b)]
10. Establish the identity
and then use it to derive Lagrange's trigonometric identity:
+
+
Suggestion: As for the first identity, write S = 1 + z z2 + .
zn and consider
the difference S  zS. To derive the second identity,
CHAP. I
0
X
FIGURE 5
So the conjugate of the sum is the sum of the conjugates:
In like manner, it is easy to show that
and
(5)
+
+r
The sum z
of a complex number z = x iy and its conjugate Z = x  iy is
the real number 2x, and the difference z  z is the
Group 1: Sasikanth Thota, Aravind
Title: Week 5: Activity 3: Assignment 2
Kumar
Ravi,
Sadhana
Subramanian
1. An overview of the category of software that your team is working with
Descriptive analytics provide insight from historical data. It helps an org
Group 1: Sasikanth Thota, Aravind Kumar Ravi, Sadhana Subramanian
Title: Week 3: Activity 3: Assignment 1
1. An overview of the category of software that your team is working with
Decision Support Software: It is a software which enables business managers
Group 1: Sasikanth Thota, Aravind
Title: Week 8: Activity 3: Assignment 3
Kumar
Ravi,
Sadhana
Subramanian
1.An overview of the category of software that your team is working with
Predictive analytics helps in predicting about the future events by analyzin
Group 1: Sasikanth Thota, Aravind
Title: Week 14: Activity 5: Assignment 5
Kumar
Ravi,
Sadhana
Subramanian
1.An overview of the category of software that your team is working with
A process where large sets or big data is collected, organized and then ana
Chapter 10
*
1. What is I/O Stream?
An I/O Stream represents an input source or an output destination.
A stream can represent many different kinds of sources and destinations, including disk files, devices, other programs, and memory arrays.
Streams s
*
*
CH 14
*
1. Define the components of RFID and how active and passive tags works.
Answer: In its simplest form, an RFID system consists of a tag attached to the product to be identified, a reader, one or more antennae attached to the reader, and a compu
MIS 513 DQ 6 Chapter 6
1. According to the textbook, what are the four pillars of Web 2.0?
The four pillars of Web 2.0 are discussed on pages 235 236.
The four pillars are:
o Utilizing the Web as a Platform.
o Harnessing Collective Intelligence.
o Levera
http:/www.teradata.com/td/pdf.aspx?a=134006&b=133896
3M Moves to a Customer Focus Using a Global Data Warehouse
Dale Goodhue, University of Georgia Barbara Wixom, University of Virginia Introduction In 1995, 3M Chairman and CEO L. D. DeSimone along with h