Page 131 - Bangladesh_classwiz_BOOK2018_rev_Neat

12.2 dvsk‡bi AšÍixKiY

AšÍixKiY n‡jv ‡Kv‡bv dvsk‡bi AšÍM©Z Pj‡Ki mv‡c‡ÿ dvskbwUi cwieZ©‡bi nvi| hLb cwieZ©‡bi nvi aªæeK
_v‡K bv ZLb AšÍixKi‡Yi cÖ‡qvRb nq| †Kbbv, AšÍixKiY Kxfv‡e GKwU dvsk‡bi cwieZ©b N‡U Zvi e¨vL¨v †`q|

Í
ClassWiz K¨vjKz‡jU‡ii gva¨‡g mivmwi AšixKib Kiv bv †M‡jI wbw`©ó gv‡bi Rb¨ AšÍi†Ki gvb mvswL¨Kfv‡e
†ei Kiv hq| GRb¨ K¨vjKz‡jU‡i GKwU AšÍixKiY evUb Y i‡q‡Q hv qy †P‡c cvIqv hvq|
2
( ) = 3 Gi AšÍi‡Ki gvb = 2 we›`y‡Z †ei Kivi Rb¨ cÖ_‡g w1 †P‡c Calulate mode wbe©vPb
3
Ki‡Z n‡e| Gici qy Pvc‡Z n‡e| AZtci dvskbwU A_©vr 3 UvBc K‡i Kx †P‡c Gi gvb wn‡m‡e
2 cÖ‡ek Kiv‡Z n‡e| Gici = evUb Pvc‡j wb‡Pi g‡Zv djvdj cvIqv hv‡e|

Ab¨vb¨ we›`y‡Z dvskbwUi AšÍi‡Ki gvb †ei Kivi Rb¨ ! Kx e¨envi K‡i mwVKfv‡e wb‡`©kbvwU m¤úv`b K‡i
z
Lye mn‡RB wewfbœ we›`yi Rb¨ gvb †ei Kiv hvq| wb‡P wKQz D`vniY †`Lv‡bv n‡jv-

wKfv‡e dvsk‡bi gvb cwiewZ©Z nq Zv AšÍi‡Ki gva¨‡g Lye mn‡RB Abyaveb Kiv hvq| G‡ÿ‡Î Gi gvb e„w×i

mv‡_ mv‡_ AšÍi‡Ki gvb e„w× cv‡”Q A_©vr ( ) Gi gvb e„w× cÖvß n‡”Q| A_©vr dvskbwUi †jLwP‡Îi Xvj DaŸ©gywL|
gv‡bi ZvwjKv e¨envi K‡i AšÍi‡Ki gvb ch©‡eÿY Kiv myweavRbK| hv wb‡P †`Lv‡bv n‡jv|

12.3 AšÍi‡Ki ˆewkó¨

AšÍi‡Ki wewfbœ ˆewkó¨ mvswL¨Kfv‡e ch©‡eÿ‡Yi Rb¨ derivative wb‡`©kbv e¨envi Kiv hvq|
D`vniY¯^iƒc, ‡Kv‡bv dvsk‡bi mv‡_ aªæeK †hvM Ki‡j Zvi AšÍi‡Ki gv‡bi ‡Kv‡bv cwieZ©b nq bv| = 3 we›`y‡Z
4
3
( ) = − Gi AšÍi‡Ki gvb dvskbwUi mv‡_ ‡Kv‡bv aªæe‡Ki ms†hv‡M cwiewZ©Z nq bv|

Ab¨w`‡K, GKwU dvskb‡K GKwU aªæeK w`‡q ¸Y Ki‡j AšÍi‡Ki gvb cwiewZ©Z nq| D`vniY¯^iƒc, wb‡Pi w¯Œ‡b
2
2
( ) = Ges dvskbwU‡K 6 Øviv ¸Y K‡i bZzb dvskb ( ) = 6 Gi AšÍi‡Ki gvb GKwU wbw`©ó we›`y‡Z
†`Lv‡bv n‡q‡Q-

126