Sharp El531wh User Guide

20
So lv e  fo r x fir st a n d  t h en  s o lv e  fo r y u sin g x.
L ast A nsw er M em ory

y =  4  ¸ xan dx =   2  +  3
O pera tio nD is p lay
DEG
DEG
2 3
4
Auto m atic all y  r e call s  t h e la st a n sw er c alc u la te d  b y p re ss in g 

21
The a n gle  fro m  a  p o in t 15  m ete rs fro m
a b uil d in g t o  t h e h ig h est flo o r o f  t h e
build in g is  4 5°. H ow t a ll   is  t h e b uil d in g?
Trig o nom etr ic  F un cti o ns
[DEG mode]
V
A PPLIC ATIO NS:
Trig o no m etr ic  fu nctio ns a re  u se fu l  in  m ath em atic s a n d  v ario us e n gin ee rin g
calc u la tio ns. T hey a re  o ft e n  u se d  in  a stro no m ic al  o bse rvatio ns, c iv il  e n gi-
n eerin g a n d  in  c alc u la tio ns invo lv in g e le ctr ic al  c...

22
Arc t r igo no m etr ic  fu nctio ns, t h e inve rse  o f  t r igo no m et-
r ic  fu nctio ns, a re  u se d  t o  d ete rm in e a n  a n gle  fr o m  r a tio s
of  a  r ig h t t r ia n gle. T he c o m bin atio ns o f  t h e t h ree  s id es
are  s in-1,  c o s-1, a n d  t a n-1. T heir  re la tio ns a re ;
A rc  Tr ig o nom etr ic  F uncti o ns
[DEG mode]
(a rc  s in e) D ete rm in es a n  a n gle  b ase d  o n t h e r a tio
b/a  o f  t w o s id es o f  a  r ig h t t r ia n gle .
(a rc  c o sin e) D...

23
Hyp erb olic  F unctio n s
T he hy p erb o li c  fu nctio n is  d efin ed  b y u sin g n atu ra l  e x po nen ts  in  t r igo -
no m etr ic  fu nctio ns.
A PPLIC ATIO NS:
H yp erb o lic  a n d  a rc  hy p erb o lic  fu nctio ns a re  very u se fu l  in  e le ctr ic al
e n gin ee rin g a n d  p h ysic s.
A rc hy p erb o li c  fu nctio ns a re  d efin ed  by u sin g n atu ra l  lo garit h m s in  t r igo no -
m etr ic  fu nctio ns. 

24
Coord in ate  C onve rs io n
Rectangular coordinates
P (x,y)
y
xo
y
x
y
P (r,q)
xo
r
Polar coordinates
q
C onverts  re cta n gu la r c o o rd in ate s t o  p o la r c o ordin ate s (x,y     r, q)
C onverts  p o la r c o ordin ate s t o  re cta n gu la r c o ordin ate s (r, q      x, y)
S p li t s  d ata  u se d  fo r d ual- v aria b le  d ata  in put.
D is p lay s r, q  a n d  x, y.  (C x    y o r r      q)
¬
¬
¬¬
D ete rm in e t h e p o la r c o ord in ate s (r, q)  w hen  t h e r e cta n gu -
la r c...

25
Bin ary , P enta l,  O cta l,  
D ecim al,  a nd  H exa d ecim al 
O pera tio ns ( N -B ase )
T his  c alc u la to r c an  p erfo rm  c o nve rsio ns b etw ee n  n um bers e x pre sse d  in  b in ary ,  p en ta l,  
o cta l,   d ecim al,   a n d  h ex ad ecim al  s y ste m s.  It  c an  a ls o  p erfo rm  t h e fo ur b asic  a rit h m etic  
o pera tio ns,  c alc u la tio ns w it h  p are n th ese s a n d  m em ory  c alc u la tio ns u sin g b in ary ,  p en ta l,  
o cta l,   d ecim al,   a n d  h ex...

26
DEGSTAT
Here  is  a  t a b le  o f  e x am in atio n re su lt s . In put t h is  d ata
fo r a n aly sis .

E nte rs d ata  fo r s ta tis tic al  c alc u la tio ns.
C le ars d ata  in put.
S p li t s  d ata  u se d  fo r d ual- v aria b le  d ata  in pu t.
(U se d  fo r d ual- v aria b le  s ta tis tic al  c alc u la tio ns.)
3 02
1002
...
O pera tio nD is p lay
N o.12 34567 
8
Sco re3040506070809010 0
N o. o f p u pils24 57121082
Data  t a ble  1
S e le ct s in gle -v aria b le  s ta tis tic s m ode
T...

27
Calc u la te s t h e a v e ra ge  v alu e o f  t h e d ata  ( s a m ple  d ata  x ).
C alc u la te s t h e s ta n d ard  d evia tio n fo r t h e d ata  ( s a m ple  d ata  x ).
C alc u la te s t h e s ta n d ard  d evia tio n o f  a  d ata  p o pula tio n ( s a m ple  d ata  x ).
D is p la y s t h e n um ber o f  in put d ata  ( s a m ple  d ata  x ).
C alc u la te s t h e s u m  o f  t h e d ata  ( s a m ple  d ata  x ).
C alc u la te s t h e s u m  o f  t h e d ata  ( s a m ple  d ata  x ) r a is e...

28
DA TA  C O RREC TIO N

30
40
50
2
O pera tio nD is p lay
S e le ct s in gle -v aria b le  s ta tis tic s m ode
DEGSTAT
Stat 0
DEGSTAT
DATA SET=
C orre ctio n a ft e r p re ssin g        :
C orre ctio n p rio r t o  p re ssin g          im med ia te ly  a ft e r a  d ata  e n tr y :  D ele te  in co rre ct 
d ata  w it h          ,  t h en  e n te r t h e c o rre ct d ata .
U se                  t o  d is p la y  t h e d ata  p re vio usly  e n te re d .
P re ss          t o  d is p la y  d ata  it e m...

29
APPLIC A TIO NS:
Sin gle -v aria b le  s ta tis tic al  c alc u la tio ns a re  u se d  in  a  b ro ad  r a n ge  o f  fie ld s, 
i n clu d in g e n gin ee rin g,  b u sin ess ,  a n d  e co no m ic s.  T hey a re  m ost o ft e n  a p plie d  t o  
a n aly sis  in  a tm osp h eric  o bse rv atio ns a n d  p hysic s e x perim en ts ,  a s w ell   a s fo r 
q u ali t y  c o ntr o l  in  fa c to rie s.
4 5
60
3
O pera tio nD is p lay
DEGSTAT
 X2=
DEGSTAT
 X2=
DEGSTAT
 N2=
DEGSTAT
 X3=