Page 120 - Bangladesh_classwiz_BOOK2018_rev_Neat

3. 3 + 4 − = 15
− + = 0
4 + − 2 = 17
mij mnmgxKiY †Rv‡Ui mgvavb †ei Ki‡Z n‡e|

mgvavb- D³ mij mnmgxKiY †RvU‡K g¨vwUª· AvKv‡i cÖKvk Ki‡j n‡e, = †hLv‡b,

3 4 −1 10
= [1 −1 1 ], = [ ], = [ 0 ]
4 1 −2 17

−1
g¨vwUª· mgxKiYwU mgvav‡bi Rb¨ I †K ¸Y Ki‡Z n‡e| GRb¨ cÖ_‡g †Z g¨vwUª· I
†Z g¨vwUª· cÖ‡ek Kiv‡Z n‡e| Gici T menu n‡Z Mat A I Mat B wbe©vPb K‡i Z…Zxq w¯Œ‡bi g‡Zv

UvBc K‡i = Pvc‡j djvdj cvIqv hv‡e|

(Key log- w41333=4=p1=1=p1=1=4=
1=p2=CT123110=0=17=CT3u
4=)

115