4.1
A firm is considering 3 mutually exclusive altertives as part of a production improvement program. The 3 alternatives are
as follows. Use an 8% MARR and suppose it has 6 years project life.
Alternative A
$15,000
$3,000
$6,400
Building Heights
Cost of
E344:Fall2015
Problem Set 5: Diffusion
DUE by at the START of class Thursday October 15th
1) ThefollowingdiffusiondatawasobtainedforthediffusionofBurchardium(Bd)inStevensonium
Oxide(SvO).ThetemperaturedependenceofdiffusioncoefficientsisknowntofollowArrhen
Ma 221 - Differential Equations
Homework 3
Due: Sept 22, 2016
Name (Printed):
Recitation:
Collaborators:
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Sign:
General Instructions: Write up solutions to the following set of questions and
Ma 221 - Differential Equations
Homework 4
Name (Printed):
Due: Oct 6, 2016
Recitation:
Collaborators:
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Sign:
General Instructions: Write up solutions to the following set of questions and s
Ma 221
Homework 11
Due: Dec 8, 2016
Name (Printed):
Recitation:
Pledge and Sign:
General Instructions: Write up solutions to the following set of questions and submit in recitation on
the date indicated. Please staple this cover sheet to your solution pag
Ma 221 - Differential Equations
Homework 1
Name (Printed):
Due: Sept 8, 2016
Recitation:
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Taylor polynomials: applications and error estimation
MA-123, Fall 2016
MA-123, Fall 2016 (Stevens Institute)
Taylor polynomials: applications and error estimation
1/5
Taylor polynomials
Recall that given a function f (x), the Taylor polynomial of order n
1. [10]
2. [10]
3. [10]
Ma 123
4. [10]
Exam 2
5. [10]
Total: [50]
Oct 14, 2014
Solutions
Name:
Check your Section:
A - Ushakov (9:00am)
B - Dubovski (10:00am)
C - Dubovski (noon)
D - Ushakov (10:00am)
E - Gilman (11:00am)
F - Wang (noon)
Closed book
Ma 221 - Differential Equations
Homework 6
Due: Oct 20, 2016
Name (Printed):
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Ma 221 - Differential Equations
Homework 5
Due: Oct 13, 2016
Name (Printed):
Recitation:
Collaborators:
I pledge my honor that I have abided by the Stevens Honor System.
Sign:
General Instructions: Write up solutions to the following set of questions and
E344:Fall2015
Problem Set 5: Diffusion
DUE by at the START of class Thursday October 15th
1) ThefollowingdiffusiondatawasobtainedforthediffusionofBurchardium(Bd)inStevensonium
Oxide(SvO).ThetemperaturedependenceofdiffusioncoefficientsisknowntofollowArrhen
E355 - Engineering Economics
Lecture 05 B: Depreciation
Chapter: 11
Kathryn D. Abel, Ph.D.
School of Systems & Enterprises
Lecture 05 B
Lecture Objectives
After completing this module you should
understand the following:
Overview of Depreciation
Depreci
Confirming Pages
CHAPTER
4
TRANSIENT HEAT
CONDUCTION
T
he temperature of a body, in general, varies with time as well as position.
In rectangular coordinates, this variation is expressed as T(x, y, z, t), where
(x, y, z) indicate variation in the x-, y-,
4.1
A firm is considering 3 mutually exclusive altertives as part of a production improvement program. The 3 alternatives are
as follows. Use an 8% MARR and suppose it has 6 years project life.
Alternative A
$15,000
$3,000
$6,400
Building Heights
Cost of
Ma 221
Workshop 6 (Solutions)
Mar 8, 2016
1. The following equation models a mass-spring system with a 2 kilogram mass, a spring
constant of 6 Newtons/meter and a damping force that is 8 times the instantaneous velocity.
The system is driven by an externa
E355 - Engineering Economics
Lecture 06 A: After Tax Analysis I
Chapter:12
Kathryn D. Abel, Ph.D.
School of Systems & Enterprises
Lecture 06 A
1
Learning Goals
1. Explain the process of After Tax Analysis as it is
practiced in most companies.
2. Understan
Ma 221 - Differential Equations
Homework 2
Due: Sept 15, 2016
Name (Printed):
Recitation:
Collaborators:
I pledge my honor that I have abided by the Stevens Honor System.
Sign:
General Instructions: Write up solutions to the following set of questions and
Ma 221
Homework 10
Name (Printed):
Due: Nov 29, 2016
Recitation:
Pledge and Sign:
General Instructions: Write up solutions to the following set of questions and submit in recitation on
the date indicated. Please staple this cover sheet to your solution pa
Ma 221
Homework 9
Due: Nov 17, 2016
Name (Printed):
Recitation:
Pledge and Sign:
General Instructions: Write up solutions to the following set of questions and submit in recitation on
the date indicated. Please staple this cover sheet to your solution pag
Ma 221 - Differential Equations
Homework 4
Due: Feb 16, 2017
Name (Printed):
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Ma 221 - Differential Equations
Homework 3
Name (Printed):
Due: Feb 9, 2017
Recitation:
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General Instructions: Write up solutions to the following set of questions and s
Ma 221 Homework Solutions Spring 2009 Due January 20, 2009
1.2 p.14 # 4, 9, 11, 15, 20b, 21b, 22a,b (The underline denotes the problems that are handed in as part of the HW) In problem 4, determine whether the given function is a solution to the given dif
Ma 221 Homework Solutions Spring 2009 Due January 15/16, 2009
1.2 p.14 #1, 3, 5, 6, 7, 9, 8 1. dy (a) Show that x 2x 3 is an explicit solution to x dx 3y on the interval -, . Differentiating x gives: x 6x 2 Substituting and for y and y : dy x dx 3y xy 3y
Name:_ Lecture Section: _
Lecturer _
Ma 221
Exam IA
08S
I pledge my honor that I have abided by the Stevens Honor System._
You may not use a calculator, cell phone, or computer while taking this exam. All work must be shown to obtain full credit. Credit w
MA 221 Homework Solutions Due date: April 16/17, 2009
Section 10.4: 6, 8 Section10.5: 1, 3, 5 (Underlined problems are to be handed in) 6.) fx cos x 0x Here T fx
b n sin nx T
n1
where b n 2 T
0 fx sin nx dx T
T
2 bn Substituting fx 8.) fx - x 2 0x fx 2
MA 221 Homework Solutions Due date: April 14, 2009
Section 10.2, #27 & 29 (Underlined Problems are to be handed in) 27.)
2 u 1 u 1 2 u 0 r r r 2 r 2 2 with ur, RrT. Subsituting into the PDE we get R T 1 R T - 1 RT r r2 or r 2 R rR - T R T since the left
MA 221 Homework Solutions Due date: April 7, 2009
Section 10.6 Problems 5, 9, 11 (Underlined problems are to be handed in) 0 x a, 5.) fx h 0 x/a, fx h 0 L - x/L - a, axL and g0 0 The problem is consistent because g0 0 gL and f0 0 fL The formal solution is