Sharp PC-1500 - Logar Ithmic Functions

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In the above examp les. the sine of 30 is compu t ed ill each mode. Pr odu ci ng three different
(but equ ivalent) ans .. vers. Inverse trigonometric functions can al so be perfo rmed as fol l ows :
RA D. : 11ma l
Sets mode
ASN 0.5 1 ...,u l
I 5. 2 35987756E - 0 1 J Arcsine of _ _
5
DEG . l ••~• I~ -------------- ~ Sets mode
ASN - 0.5 l••ff•I L
- 3 ~
Arcsine ot - .5
A CS (- . 5+ . 1} l •• T<• I [ - 11 3. 57 8 17 85 ]
--- Ar ccos ine
ATN (7 /3 ) ( l• l fA ) I 66. 80 1 40 94 9 J
- - - Arctangent
F. Logarithmic Functi on s
LN. LOG
The function LN will compute the na tu ral logarithm (base e) while the funcl io n LOG will
compute the co mmon logarithm (base 1 0} . These arc executed in the RU N mode as follow s:
LN 7 .4
I ENTtR I
I
2. 0 0 1 48
LOG 7.4
, ..... ,
L
1
8. 69231719 7E - 0 1
LN 25
! fH T fA I
I
3. 2 1887 5825
LOG 100
\iiii tt ~ 1
I
_ 2 ,
EXP
The reverse function of LOG is a number raised to a power of 10. For examp le:
LOG 100 i< •n• I
2
___ 1 0 ~
Because t he na tural log (LN) is not based on a powe r of 10 but on a PO \-.i er of e. a re v erse
function is ne ce ssary . This fu nction is EXP.
Example:
LN 7. 4 lum•I
2. 00 14 8 ]
EXP 2.001 48 l <HTn l
[
~ 7. 39999999 !D
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