Page 123 - Bangladesh_classwiz_BOOK2018_rev_Neat

K¨vjKz‡jU‡i m‡e©v”P PviwU †f±i cÖ‡ek Kiv‡bv hv‡e| Ab¨vb¨ †f±i wba©viY Kivi Rb¨ T Pvcvi ci1
3 −2
Pvc‡Z n‡e| wb‡Pi w¯Œ‡b = [−1] I = [ 4 ] cÖ‡ek Kwi‡q †`Lv‡bv n‡jv|
−4 −3

̂
̂
A_©vr = 3 ̂ − ̂ − 4 I = −2 ̂ + 4 ̂ − 3
cÖ‡Z¨K evi bZzb †f±i cÖ‡ek Kiv‡bvi Rb¨ T1 †P‡c Define Vector w¯Œ‡b Avm‡Z n‡e|

11.2 †f±‡ii gvb I w`K

†Kv†bv †f±‡ii gvb wbY©‡qi Rb¨ †f±iwUi Dcv`vb¸‡jvi e‡M©i †hvMdj‡K eM©g~j Ki‡Z nq| Avi †f±‡ii gvb‡K
cÖKvk Kivi Rb¨ gWzjvm wPý e¨envi Kiv nq| †hgb †f±‡ii gvb | | Øviv wb‡`©k Kiv nq| A_©vr
2
2
2
2
2
2
| | = √ + + = √3 + 2 + (−6) = 7
ClassWiz K¨vjKz‡jU‡i †f±‡ii gvb †ei Kivi Rb¨ q( ‡P‡c e wb‡`©kbv e¨envi Kiv nq| hv mivmwi
†f±‡ii gvb cÖ`k©b Ki‡e| ‡f±iwUi gvb †ei Ki‡Z n‡j q( †P‡c e wbe©vPb K‡i T menu ‡_‡K
3 †P‡c vct A wbe©vPb Ki‡Z n‡e| Gici ) †P‡c = Pvc‡jB †f±‡ii gvb cvIqv hv‡e hv wb‡Pi w¯Œ‡b
†`Lv‡bv n‡jv-

Dc‡ii me©‡kl w¯Œb †_‡K †`Lv hv‡”Q †f±‡ii gvb n‡jv 7

SET UP ‡gby e¨envi K‡i Multiline font e¨envi K‡i A‡bK¸‡jv djvdj GKmv‡_ †`Lv hvq|

‡Kv†bv †f±‡ii w`K ej‡Z mvaviYZ H †f±iwU A‡ÿi mv‡_ Nwoi KuvUvi wecixZ w`‡K †h ‡Kv‡bv Drcbœ K‡i
1
Zvi gvb‡K eySvq| Aÿ‡K GKwU GKK †f±i ̂ Øviv wb‡`©k Kiv nq| myZivs A‡ÿi mvwi †f±i n‡e [0]|
0
myZivs ‡Kv‡bv †f±‡ii w`K wbY©‡qi Rb¨ A‡ÿi mv‡_ H †f±‡ii †KvY wbY©q KivB h‡_ó| Avi †mRb¨ T
118