Bab 15 Matriks

4.9 SPM Practis (Soalan Pendek)

Soalan 1:
(1462)+3(2043)(3025)=

Penyelesaian:
(1462)+3(2043)(3025)=(1462)+(60129)(3025)=(74187)(3025)=(7(3)4018(2)7(5))=(104202)


Soalan 2:
Cari nilai mdalam persamaan matriks berikut:
(9450)+12(8m610)=(13721)

Penyelesaian:
(9450)+12(8m610)=(13721)4+12m=712m=3m=6


Soalan 3:
Diberi(2x3y)4(23)=(26)Cari nilai x dan y.

Penyelesaian:
2x + 8 = –2
2x = –10
x= –5

3y – 12 = 6
3y = 18
y= 6 


Soalan 4:
Diberi bahawa persamaan matriks 3(6   m) + n(3   4) = (12   7),
Cari nilai m+ n.

Penyelesaian:
3(6   m) + n(3   4) = (12   7)
18 + 3n = 12
3n = –6
n= –2

3m + 4n = 7
3m + 4(–2) = 7
3m = 15
m= 5

Maka m + n = 5 + (–2) = 3