E-19
kCommon and Natural Logarithms/
Antilogarithms
• Example 1: log 1.23 ҃
0.089905111
R 1.23 =
• Example 2: In 90 (= log
e
90) =
4.49980967
T 90 =
ln e ҃
1
T p P =
• Example 3: e
10
҃
22026.46579
A U 10 =
• Example 4: 10
1.5
҃
31.6227766
A Q 1.5 =
• Example 5: 2
ȕ3
҃
0.125
2 W D 3 =
• Example 6: (ȕ2)
4
҃
16
R
D 2 T W
4
=
• Negative values inside of calculations must be enclosed
within parentheses. For details, see “Order of Operations.”
kSquare Roots, Cube Roots, Roots,
Squares, Cubes, Reciprocals,
Factorials, Random Numbers,
π
, and
Permutation/Combination
• Example 1: 2 ѿ 3 ҂ 5 ҃
5.287196909
L 2 + L 3 - L 5 =
• Example 2:
3
5 ѿ
3
ȕ27 ҃
–1.290024053
A D 5 + A D R D 27 T =
• Example 4: 123 ѿ 30
2
҃
1023
123 + 30 K =
• Example 5: 12
3
҃
1728
12 N =
1
7
• Example 3:
7
123 ( = 123 ) ҃
1.988647795
7 A H 123 =
• Example 6: ҃
12
R
3
a ,
4
a T a =
1
ȕ
1
3 4
1
• Example 7: 8! ҃
40320
8 A f =