Sharp El531wh User Guide

10
Basic  A rith m etic
K eys , P are n th e se s
U se d  t o  s p ecif y  c alc u la tio ns in  w hic h  c e rta in  o pera tio ns h ave p rece d en ce.
Yo u c an  m ake  a dd it io n a n d  s u btr a c tio n o pera tio ns h ave p rece d en ce  ove r
mu lt ip li c atio n a n d  d iv is io n by  e n clo sin g t h em  in  p are n th ese s.
T he fo ur b asic  o pera to rs. E ac h  is  u se d  in  t h e s a m e w ay a s a  s ta n d ard
c alc u la to r:
+  ( a dd it io n), –  (s u btr a c tio n), x  ( m ult...

11
Fo r c alc u la tin g p erc e n ta ge s.  F o ur m eth o ds o f  c alc u la tin g p erc e n ta ge s
are  p re se n te d  a s fo llo w s.
1) $12 5 in cre ase d  by 10 % …137 .5
2 ) $12 5 re d uce d  by 2 0% …100
3) 15 %  o f $12 5…18.7 5
4) W hen  $125 e q u als  5 %  o f X , X  e q uals …2 500
12 51 0
12 52 0
12 51 5
12 55
Perc e nt
DEG
DEG
DEG
DEG 

12

Calc u la te s t h e s q uare  ro ot o f  t h e v alu e o n t h e d is p lay.
C alc u la te s t h e inve rse  o f  t h e v alu e o n t h e d is p lay.
S q uare s t h e v alu e o n t h e d is p lay.
C ubes t h e v alu e o n t h e d is p la y .
C alc u la te s t h e c u be ro ot o f  t h e v alu e o n t h e d is p lay.
C alc u la te s t h e xth r o ot o f y.
2 4
416
DEG
DEG
DEG
O pera tio nD is p lay
C alc u la te s e x p o nen tia l  v alu es.
2222
In ve rs e , S quare , C ub e, 
x th  P ow er o f y...

13
10 t o  t h e P ow er o f x ,
C om mon L ogarith m

C alc u la te s t h e v alu e o f 10  r a is e d  t o  t h e xth p ower.
C alc u la te s lo garit h m , t h e e x po nen t o f  t h e p ower t o  w hic h  10 mu st b e
ra is e d  t o  e q ual  t h e g ive n  v alu e.
1 000
3
O pera tio nD is p lay
DEG
DEG 

14
e t o  t h e P ow er o f x ,
N atu ra l L ogarit h m
C alc u la te s p o wers b ase d  o n t h e c o nsta n t e ( 2 .718 281828).

5
1 0
O pera tio nD is p lay
DEG
DEG
C om pute s t h e v alu e o f  t h e n atu ra l  lo garit h m ,  t h e e x po nen t o f  t h e p o w er 
t o  w hic h  e  m ust b e r a is e d  t o  e q ual  t h e g iv e n  v alu e. 

15
Facto ria ls
T he p ro duct o f  a  g ive n  p o sit ive  in te ge r n mu lt ip lie d  by a ll  t h e le sse r p o sit ive
i n te ge rs fro m  1 t o  n-1 is  in d ic ate d  b y n!  a n d  c alle d  t h e fa c to ria l  o f n.
A PPLIC ATIO NS:
U se d  in  s ta tis tic s a n d  m ath em atic s.  In  s ta tis tic s,  t h is  fu nctio n is  u se d
in  c alc u la tio ns invo lv in g c o m bin atio ns a n d  p ermu ta tio ns.

c .f
n!  =  1 x  2  x  3  x  …xn
O pera tio nD is p lay
DEG
7 

6
6
16
APP LIC ATIO NS:
U se d  in  s ta tis tic s ( p ro bab il it y  c alc u la tio ns) a n d  in  s im ula tio n h yp o th -
ese s in  fie ld s s u ch  a s m ed ic in e, p harm ac e u tic s, a n d  p hysic s. A ls o,
c an  b e u se d  t o  d ete rm in e t h e c h an ce s o f  w in n in g in  lo tte rie s.
P erm uta tio ns, C om bin atio ns

T his  fu nctio n fin d s t h e n um ber o f  d if fe re n t p o ssib le  o rd erin gs in  s e le ctin g
r o bje cts  fr o m  a  s e t o f n  o bje cts .  F o r e...

17
Tim e C alc u la tio n
C onvert 2 4° 2 8 ’  3 5 ” (2 4 d egre es, 2 8 m inu te s, 3 5 s e c-
o nd s) t o  d ecim al  n o ta tio n. T hen  c o nve rt 2 4 .4 76 ° t o
s e x age sim al  n o ta tio n.
C onverts  a  s e x ag e sim al  v alu e d is p laye d  in  d egre es, m in ute s, s e co nd s to
d ecim al  n o ta tio n. A ls o, c o nverts  a  d ecim al  v alu e to  s e x ag e sim al
n o ta ta io n (d egre es,  m in ute s,  s e co nd s).
In p uts  v alu es in  s e x age sim al  n o ta tio n (d egre e s,...

18
Fra ctio nal C alc u la tio ns
A dd  3        a n d        , a n d  c o nvert t o  d ecim al  n o ta tio n.
In puts  fr a c tio ns a n d  c o nverts  m utu ally  b etwe e n  fr a c tio ns a n d  d ecim als .
C onverts  b etwe en  m ixe d  n um bers a n d  im pro per fr a c tio ns.
3 12
5 7
Convert t o  a n  im pro per fr a c tio n
Press o nce  t o  re tu rn  t o  t h e p revio us d is p lay
C onvert t o  d ecim al  n o ta tio n
Press o nce  t o  re tu rn  t o  t h e p revio us d is p lay
A PPLIC ATIO...

19
Sto res d is p laye d  v alu es in  m em orie s A ~F, X , Y, M .
Recalls  v alu es s to red  in  A ~F, X , Y, M .
Adds t h e d is p laye d  v alu e t o  t h e v alu e in  t h e in d ep en d en t m em ory M .
Mem ory C alc u la tio ns

2 527
7 3
DEG
MDEG
MDEG
MDEG
Opera tio nD is p lay
~
Te m po ra ry  m em orie s
~
(E nte r 0  fo r M )
0

Su btr a c ts  t h e d is p la y e d  v alu e fr o m  t h e v alu e in  t h e in d ep en d en t m em ory  M .
In d ep en d en t m em ory
O pera tio nD is p lay
C alc...