Algebra Demystified 2nd Ed

208 algebra De mystif ieD

4. PLWL
   PLW
   WW
   PWL
   PWL

=+

=+

−−

−=

− =

22

22

22

22

2

2

; 

5. LL adta
   LL adt
   LL Ladt
   L

=+

=+

=+

0

0

00

1

1

1

[()]; 

[()]

() [()]

==+

−−

−=

− =

LLdta

LL

LL Ldta

LL

Ldt

Ldt

Ldt

00

00

00

0

0

0

0

()

()

aa

LL

Ldt

− (^0) =a
0

6. SCRC C
   SCRC
   SC RC

=+

=+

=+

; 

()1F(actorout sincewearresolvingforC.

S

R

C R

R

S

R

C

)

1

1

1

1

+

= +

+

+

=

7. APPRTR
   APPRTP

=+

=+

; 

(Donotfactor outsinceewearenotsolving for.P)

PP

APPRT

AP

PT

P

−−

−=

− = TTR

PT

AP

PT

− =R