Page 119 - Bangladesh_classwiz_BOOK2018_rev_Neat

D`vniYgvjv

1 2 2 −3
1. = [ ] I = [ ] n‡j + = ?
3 −4 1 −5

mgvavb- cÖ_‡g w4 †P‡c Matrix mode G Avm‡Z n‡e| Gici Mat A I Mat B ‡Z h_vµ‡g I
g¨vwUª· cÖ‡ek Kiv‡Z n‡e| Gici Tmenu n‡Z Mat A I Mat B wb‡q wb‡Pi g‡Zv K‡i †hvM Ki‡Z
n‡e|

(Key log-w41221=2=3=p4==CT122
22=p3=1=p5=CT3+T4=)

 1 2 3 4 
 5 1 6 7 
−1
2. =   n‡j = ?
 8 9 1 10 
 
 11 12 13 14 

mgvavb- 1 bs D`vni‡Yi g‡Zv K‡i g¨vwUª· K¨vjKz‡jU‡i cÖ‡ek Kiv‡Z n‡e| Z‡e mvwi I Kjvg msL¨v 4 wbe©vPb
Ki‡Z n‡e| Gici Tmenu Gi wØZxq w¯Œb †_‡K 2 wbe©vPb Ki‡Z n‡e| AZtci Avevi T ‡P‡c Mat

A wbe©vPb Ki‡Z n‡e| Gici =evUb Pvc‡j wb‡Pi w¯Œ‡bi g‡Zv wbY©vq‡Ki gvb cvIqv hv‡e|

©
‡h‡nZz wbYvq‡Ki gvb k~b¨ bq ZvB g¨vwUª·wUi wecixZ g¨vwUª· _vK‡e| AZtci T menu ‡_‡K Mat A wb‡q
−1
u Pvc‡Z n‡e| Gici = evUb Pvc‡j g¨vwUª‡·i wecixZ g¨vwUª· cvIqv hv‡e|

Kvm©iwU‡K DVv-bvgv Kiv‡j mswkøó gvbwU fMœvsk AvKv‡i cÖ`wk©Z n‡e|

(Key log- w41441=2=3=4=5=1=6=7=
8=9=1=10=11=12=13=14=CT
R2T3)=T3u=)

D‡jøL¨, G‡ÿ‡Î g¨vwUª·wUi wbY©vq‡Ki gvb ‡ei Kivi ‡Kv‡bv cÖ‡qvRb †bB| g¨vwUª·wUi wecixZ g¨vwUª· †h cvIqv
hv‡e Zv †`Lv‡bvi Rb¨B wbY©vq‡Ki gvb †ei Kiv n‡q‡Q|

114