11
2006 Fall MATH 100 Lecture 8 1 MATH 100 Lecture 25 Final review 44.)) 33, 15.2 (Ex ) , ( ) , ( lim Continuity b. exis t doesn' ln lim ) , ( lim limits a. 0 0 ) , ( ) , ( 2 2 ) , ( ) , ( ) , ( ) , ( 0 0 0 0 0 0 y x f y x f y x xy L y x f y x y x y x y x y x y x Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

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Page 1: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 1

MATH 100 Lecture 25 Final review

44.)) 33, 15.2(Ex

),(),(lim

Continuity b.

existt doesn' ln

lim

),(lim

limits a.

00),(),(

22),(),(

),(),(

00

00

00

yxfyxf

yx

xy

Lyxf

yxyx

yxyx

yxyx

Class 25 Final review

1.Function of two or more variables

Page 2: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 2

MATH 100 Lecture 25 Final review

29) 11, 15.5(Ex

0)))

0),(),,(for

0)))

0

0 ofplant Tangent d.

40) 15.3(Ex

.' 0'22

1

ationdifferentiimplicit &function defined Implicitly c.

000

000

0000

22

z(zy(yfx(xf

zyxfzyxg

z(zgy(ygx(xg

xx),z,yg(x

g(x,y,z)

y

xyyyx

yx

yx

zyx

Page 3: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 3

MATH 100 Lecture 25 Final review

zyx

yx

gggg

yx

yxyfxfyxf

,,

f.Gradient

45) 15.4(Ex

.0& as 0,,

),(

aldifferenti Total e.

121

21

Page 4: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 4

MATH 100 Lecture 25 Final review

D>0 Real min

Real max

D<0 Saddle saddle

D=0 ? ?

testpartial Second

),(0

0

),( ima,maxima/min localint Unconstrah.

19) 15.7Ex 30, 15.6(Ex

1 ,

sderivative lDirectiona g.

ii

u

yx

y

fx

f

yxfz

uuggD

0xxf 0xxf

(Ex 15.9 17 22)

Page 5: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 5

MATH 100 Lecture 25 Final review

17,22) 15.9x (

0),(

),(),(),(min

imamaxima/min constraintfor multiplier Lagrange i.

00

0000

),(

E

yxg

yxgyxfyxf

yxg

Page 6: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 6

MATH 100 Lecture 25 Final review

2. Integral

25) 8, 16.6Ex 17 11, 16.5Ex 31, 18, 16.2(Ex

),,( ),,(

}),( ),,(),(),,({

integral Triple

),(),(

} ),()(),({

integral Double a.

),(

),(

21

)(

)(

21

2

1

2

1

R

yxg

yxgV

b

a

xg

xgR

dAdzzyxfdVzyxf

RyxyxgzyxgzyxV

dxdyyxfdAyxf

bxaxgyxgyxR

Page 7: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 7

MATH 100 Lecture 25 Final review

5) 17.5(Ex area. surface theyieldsit ,1when

1)),(,,(

),(over integral Surface c.

17) 16.8(Ex

),(

),()),(),,((),(

then

plane, in the into plane in the maps ),( and

),( if :Jacobians and integralsin variablesof Change b.

22

g

dAffyxfyxg

yxfz

dAvu

yxvuyvuxfdAyxf

xyRuvSvuyy

vuxx

R

xx

S

uv

R

xy

Page 8: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 8

MATH 100 Lecture 25 Final review

18) 14, 17.3Ex ( 0 then ),,(),( if ,particularIn

),(),(

and function,

potential its is and field vector veconservati a called is

, If :functions potential and fieldon Conservati e.

41) 27, 17.2(Ex

))(')(),(),(())(')(),(),(())(')(),(),((

integral line d.

0011

0011

C

C

b

a

CC

rdFyxyx

yxyxrdF

F

F

dttztztytxhtytztytxgtxtztytxf

hdzgdyfdxrdF

Page 9: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 9

MATH 100 Lecture 25 Final review

11,23) 17.4(Ex 0 then ve,conservati is If

.

thenckwise,counterclo oriented is which curveby

enclosed region aover continuous are sderivativeorder

1st their and , If .,Let : theoremsGreen' f.

C

RC

rdFF

dAy

f

x

grdF

C

R

gfgfF

Page 10: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 10

MATH 100 Lecture 25 Final review

14) 9, 17.8(Ex

)(

normal outward surface, closed

,,, : theoremDivergence h.

19) 9, (Ex17.7 ly.respective

,orientaion upward"" and downard"" tocorrespond "-" and ""

1,,

norientatiowith

),(over ,function vector of integral Surface g.

r

zyx

R

yx

dVhgfdSnF

hgfF

dAzzFdSnF

yxfzF

Page 11: 2006 Fall MATH 100 Lecture 81 MATH 100 Lecture 25 Final review Class 25 Final review 1.Function of two or more variables

2006 Fall MATH 100 Lecture 8 11

MATH 100 Lecture 25 Final review

3. Integration with other coordinate

16) 13, 16.7Ex (

sin),,(

scoordinate Spherical b.

,),,(

),(

} ),()(),({ coordinatePolar a.

2

1

2

1

2

1

2

1

2

1

2

1

2

),(

),(

)(

)(

2121

dddffdV

rdrddzzrffdV

dxrdrrffdA

rrrrR

V

R

rg

rgV

r

rR