DavidK.Cheng-FieldandWaveElectromagnetics2edSolutionManual资源-CSDN文库

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I

realize

that,

no

matter

how

careful

I

have

endeavored

to

be,

occasional

errors

may

still

exist.

I

should

be

grateful

if

you would be

kind

enough

to

notify

me a3 you

discover

them

either

in

the

book

or

in

this

manual.

Sincerely,

David K. Cheng

Electrical

and Computer

Engineering

Department

Syracuse

University

Syracuse,

NY

13210

(For

the

use

of

instructors

only.)

A

note

to

instructors

using

FIELD

AND

WAVE

ELECTROHAGNETICS.

Dear

Colleague:

As

teachers

of

introductory

electromagnetics,

we

are

all

aware

of

two

facts:

that

most

students

consider

the

subject

matter

difficult

and

that

there

are

numerous books on

the

market

dealing

with

this

subject.

It

is

understandable

that

s~udents

find

electromagnetics

difficult.

First

of

all,

the

subject

ma

tter

is

buil

t upon

abstract

models

that

demand a good

math-

ematical

background. Second,

before

the

course

on

elec-

tromagnetics,

students

who have

studied

circuit

theory

normally

encounter

functions

of

only

one

independent

variable,

namely,

time'

whereas 1n

electromagnetics

they

are

suddenly

required

to

deal'with

functions

of

four

variables

(space

and

time).

This

is

a

big

transition,

and

visualization

problems

associated

with

solid

geometry add

to

the

difficulty.

Finally,

students

are

often

confused

about

the

way

the

subject

matter

Is

developed,

even

after

they

have completed

the

course,

mainly

because

most

books do

not

provide

a

unified

and

comprehensible

approach.

As I

point

out

in

the

Preface

of

the

book,

the

inductive

ap-

proach

of

beginning

with

the

various

experimental

laws

tends

to

be fragmented and

lacks

cohesiveness,

whereas

the

practice

of

writing

the

four

general

Maxwell's

equations

at

the

outset

without

discussing

their

necessity

and

sufficiency

presents

a

major

stumbling

block

for

learning.

Students

are

often

puzzled

about

the

structure

of

the

electromagnetic

model. I

sincerely

believe

that

the

gradual

axiomatic

approach

based

on

Helmholtz's

theorem used in

this

book

provides

unity

in

the

gradational

development

of

the

electromagnetic

model from

the

very

simple

model

for

electrostatics.

Although a

rigorous

mathematical

proof

of

Helmholtz's

theorem

is

relatively

involved

(not

in-

cluded

in

the

book),

the

physical

concept

of

specifying

both

the

flow

source

and

the

vortex

(circulation)

source

in

order

to

define

a

vector

field

is

Quite

simple.

Many

review

~Destlons

are

provided

at

the

end

of

each

chapter.

They

are

deSigned

to review and

reinforce

the

essential

material

1n

the

chapter

without

the

need

for

a

calculator.

You

may

wish

to

use

them

as

a

vehicle

for

discussion

in

class.

I have

tried

to.m~ke

the

problems

in

each

chapter

meaningfUl

and

to

avoid

trlvlal

number-plu~1ng

types.

This

solutions

manual

gives

the

solutions

and answers

to

all

the

problems'in

the

book. I hope

it

proves to be a

useful

aid

in

teaching

from

the

book. Answers

to

odd-numbered problems

are

included

in

the

back

of

the

book.

剩余101页未读，继续阅读

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huhai5678

2017-11-18

还真是手写的
BENCJL2014

2015-07-14

没错。。这就是作者的真迹，还是手写的。。。

b09501086

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