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Function Keys
65
Press
Display
I
5.00
I
I
0.33
I
Reciprocalof3.
: =
1
=
1
.=
71
======i
1
Cube
root
of
5.
Example:
An aircraft
pilot reads
a
pressure
altitude (PA
L
T)of
25 ,500 feet with a calibrated airspeed (CAS) of 350
knots. What
is the flight mach number
speed of aircraft
M
=
---:-----,,---,-
speed of sound
if the following
formula
is
applicable?
M=
Method: The most
efficient
place to
begin work on
this problem
is
at
the innermost
set
of brackets.
So
begin by
solving
for the
quantity
t
6!~~5
j
2
and
proceed
outward from there
.
Press
Display
350mmiD
661.5
B
:=
1
0
=
.5
o =
3
===~1
iii
[£]
I
0.28
I
Squ
ar~
of
bracketed
quantIty
.
1
1.06
I
.
201 EJ
3.5
0
0
1 EJ
I
0.21
I
Contents ofleft-hand set
'--"'=-=--
--
---'
of
brackets
are
in
the stack.
I mmiD
6.875
_I
6.875
00
I
ram
6
mmiD
I
6.8750000
-06
I
255000 EJ
I
0.82
I
5.2656
Eml
0
0
1:=2
~
.~
7 6
~=====i1
Contents of
right-hand
set of brackets are
in
the stack.
01EJ
rl-
1.5
-
8------~1
.286
0
1EJ
I
0.14
I
50
0
~
10.84
I
Machnumberoftheflight.
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