Sharp PC-1403 - Page 58

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Not e : M at r i x c a l cula t i on s are b ase d o n th e met h od o f el imi nat io n being w i dely us ed .
H owev e r, due to t he n at u r e o f nu m e ri ca l c a lcu l a t i o ns b y a ny c o mput e r, a n er r or
m a y o cc ur i n the ca lc u la ti on o f a dete r m inant or an i n verse matr i x b ec au s e of
trun cati o n o r so m e o t h er r ea so ns.
Th us , the s o luti ons x , y , an d z o f the e qu a tion s are a s foll ow s :
x = 3 , y = - 1 ' z = 2
2. X(3 , 1) rn
- 1. X(2 , 1 ) m
3 .
X ( 1, 1)
rn
MATRIX : X(3 _ , 1) rn
MATRIX OPERATION
I MATRIX OPERATION
I invx ~ x
I MATRIX OPERATION
Ope r ation :
P ress the I sH 1 FT I a nd [!] keys t o p ut th e comp u t er i n the MATR I X mode an d the n
en t er the ma t ri x e l ement data of X a nd Y ac c ord i ng to E xa m pl e 1 .
Y = [ ~~ ]
-~]
5
- 1
2
X= [ !
HINTS: E nter mat r i xes X a n d Y as s how n be l ow and calcu l ate x - 1 - y to ob t a i n the
solu t io n s x , y , a n d z of the eq uation s .
U s i ng as a Cal culat or