56
Chapter 3: Manual Calculations
I
Enters a natural logarithm
function.
Example
• Calculate In
e
4
.
I
@
@
4
E
.
@
Enters the Euler Number
e
(2.71…) to a power. The cursor will then
be placed at the exponent.
Example
• Obtain a value of
e
3
.
@
@
3
E
.
y
Squares the preceding number.
Example
• Obtain the answer to 12
2
. (= 144)
12
y
E
Note: When no base number is entered, the base number area will be left
blank and just the exponent appear.
C
y
;
1 2
E
x
Enters “x
-1
”, and returns an inverse by raising a value to the -1
power. The inverse of “5”, for example, is “
1
5
”.
Example
• Raise 12 to the -1 power. (= 0.083333333)
1 2
@
x
E
Note: When no base number is entered, “x
-1
” will be entered, with “x” left
blank.
C
@
x
;
1 2
E
d
Enters a mixed number.
Example
• Enter
5
6
4
4
d
5
'
6
