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Sharp El531wh User Guide

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    							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 ip li c atio n), a n d  ¸ ( d iv is io n).
    F in d s t h e re su lt  in  t h e s a m e w ay a s a  s ta n d ard  c alc u la to r. 
    						
    							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 ,S quare  R oo t,  
    C ube R oot,  x th  R oot 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 x am ple ,  t h ere  a re  s ix  d if fe re n t
    w ay s o f  o rd erin g t h e le tte rs A BC  in  g ro ups o f  t h re e  le tte rs—A BC ,  A C B,
    B A C ,  B C A,  C AB,  a n d  C BA .
    The c alc u la tio n e q uatio n is  3P3 =  3  x  2  x  1 =  6  ( w ays).
    T his  fu nctio n fin d s t h e n um ber o f  w ay s o f  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 x am ple ,  fr o m  t h e t h re e  le tte rs A BC ,  t h ere  a re  t h re e  w ay s
    w e c an  e x tr a c t g ro ups o f  t w o d if fe re n t le tte rs—A B,  A C ,  a n d  C B.
    T he c alc u la tio n e q u atio n is  3C2.
    DEG
    DEG
    O pera tio nD is p lay 
    						
    							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,  m in ute s,  s e co nd s).
    
    A PP LIC ATIO NS:
    U se d  in  c alc u la tio ns o f  a n gle s a n d  a n gu la r v e lo cit y  in  p hysic s,  a n d
    la tit u d e a n d  lo ngit u d e in  g e o gra p hy.
    2 42835
    O pera tio nD is p lay
    R ep eat la st key  o pera tio n 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
    DEG
    DEG
    DEG 
    						
    							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 NS:
    T here  is  a  w id e v arie ty  o f  a p p li c atio ns fo r t h is  fu n ctio n b ecau se
    fr a c tio ns a re  s u ch  a  b asic  p art o f  m ath em atic s. T his  fu nctio n is  u se fu l
    fo r c alc u la tio ns in vo lv in g e le ctr ic al  c ir c u it  r e sis ta n ce .
    DEG
    DEG
    DEG
    O pera tio nD is p lay
    DEG
    1
    2
    5
    7 
    						
    							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 u la te s $ /¥  a t t h e d esig n ate d  e x ch an ge  r a te .
    1 10
    26510
    2750
    $1 = ¥110
    ¥26,510 = $?
    $2,750 = ¥?
    DEG
    110   Y
    DEG
    26510
    DEG
    2750 
    						
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