by 
; indicate along the
vertical axis that the value of 
is 1 for 
.
by 
.
and 
. The two expressions become equivalent for the following choice of
component values: 
, 
and 
.
by P.
p 478, answer to Exercise 12b: ``upper: 
VAR
inductive'' and ``lower: 
VAR capacitive''.
p 483, Problem 15d: change ``admittance'' to ``impedance''.
p 487, Problem 39c: change to Determine the lower half-power
band edge. Why is there no upper one?
p 487, Problem 39e: replace ``edges'' by ``edge'' and ``these
frequencies'' by ``this frequency''.