Sharp PC-1403 - Page 54

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Key
F unct i o n
rn
x + r - x :
Pe rf o rm s ad d itio n.
T he r esult of addi n g ma t rix X to m a t r i x Y becomes new matr i x X.
To perform addit i o n , m atri x es X an d Y mu s t be e qu a l to each
ot h er i n bo t h t he num ber of row s a nd th e n um b er of column s .
G
X - Y - X : P erforms s u btra ct i o n .
T he r esult o f sub t ract in g some e l ements of m a t r i x Y from the
corresp onding elemen t s of ma t ri x X becomes the cor r esponding
e l e m ents of n ew ma t rix X.
To perform su b trac tion , m atr i xes X a n d Y m u s t be equa l i n both
the number of ro w s a nd the num b er of colu m n s.
( E xa mp l e)
c:
: J - [ :
6 [1
~3 ]
-1]- 2
[X) X • Y - X: Perfor ms mu ltip licat io n .
To pe rf orm multi plicatio n , the num ber of co lumn s i n m at ri x X
mus t be eq u al t o the nu mb er of rows in mat r ix Y .
[TI
X • y - 1 - X: Performs t h e mu l t i plica t i o n of m atr i x X a nd i nverse
m at rix Y.
To pe rf orm this ope r a ti on , the nu mber of c o lum ns i n matrix x
m u s t b e eq u al to th e n umb er of rows in mat r i x y - 1.
[@ x - 1 - X : Performs the in ver s e matrix calcu l ation of ma t ri x X .
Th e resul t of th i s ope r ation beco m e s n e w ma t ri x X .
T o perf o rm t h i s oper a tion, matr i x X m u s t be a s quar e m a t r ix
( wh i c h h as t he sa me numb er of rows as the n umbe r of col -
umns) .
n rn
n + X - X : P erforms the addi t i on of sc a l ar n to m a t ri x X
e l e m e n ts.
I n th i s o peration , n is adde d to each e l ement of ma t r i x X .
NOTE : Ma t he m atic all y , s u c h a n operatio n as th i s does not
exist. The add i t i o n of scalars is one of t h e features
u nique t o the C OMPUTER.
Matrix Calculations
Wh il e t he m essage " MATR IX O PERATION " is o n th e d i sp l ay , press i ng eac h o f the
f o ll ow i ng keys c auses the COM P U TER t o pe rf o r m the ma t r ix ope r atio n desig n ated by
t he key .
Us i ng as a Calcul a tor