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20050501
k Logarithmic Functions (log, ln) and Exponential Functions (e, ^,
k
)
Problem
Use this keyboard:
Operation
mth abc cat 2D
log1.23 (log101.23) = ࠗ Func ࠗ l 1.23 w or
0.08990511144 )V 10 e 1.23 w
ln90 (loge90) = 4.49980967 ࠗ Func ࠗ I 90 w or
)V0ne
e 90 w
log39 = 2 ࠗ Func ࠗ l 3 , 9 w or
)V 3 e 9 w
10
1.23
= 16.98243652 ࠗ MATH Cmd ࠗ 10 { 1.23 w
e
4.5
= 90.0171313 ࠗ MATH Func ࠗ e 4.5 w or
)Q 4.5 w
(–3)
4
= (–3) × (–3) × (–3) × ࠗ MATH Cmd ࠗ (- 3 ){ 4 w
(–3) = 81
–3
4
= – (3 × 3 × 3 × 3) = –81 ࠗ MATH Cmd ࠗ - 3 { 4 w
7
123 (= 123
) ࠗ MATH Cmd ࠗ 123 {( 1 / 7 w or
= 1.988647795 )% 7 e 123 w
2 + 3 ×
3
64 – 4 = 10 ࠗ MATH Cmd ࠗ 2 + 3 * 64 {( 1 /
3 )- 4 w or ) 2 +
3 *% 3 e 64 e- 4 w
Can be omitted.
Tip
•^ and
Ⅵ
Ⅺ have a higher calculation priority sequence than × and ÷.
2-4-3
Function Calculations
1
—
7