Page 34 - Bangladesh_classwiz_BOOK2018_rev_Neat

wØNvZ dvsk‡b GKwU wØNvZ m¤^wjZ PjK _v‡K Ges Gi ‰ewkó¨ ‰iwLK dvskb ‡_‡K wfbœ| Pj‡Ki gv‡bi GKB
cwigvY cwieZ©‡bi mv‡_ dvsk‡bi gvb wbqwg‡Zvfv‡e cwiewZ©Z nq bv| D`vniY¯^iƒc, GKwU wØ NvZ dvskb
2
( ) = − 2 − 1, hvi gv‡bi ZvwjKv wb‡P ‡`Iqv n‡q‡Q| hLb Gi gvb 1 n‡Z 2 †Z e…w× cvq, ZLb
dvsk‡bi gvb 1 e„w× ‡c‡q −2 ‡_‡K −1 nq| wKš‘ hLb Gi gvb 2 ‡_‡K 3-‡Z cwiewZ©Z nq ZLb dvsk‡bi
gvb 3 GKK e…w× ‡c‡q −1 ‡_‡K 2-G hvq| ‰iwLK dvsk‡bi g‡Zv e…w×wU wbqwgZ bq|

‡Uwe‡ji Dc‡i ‡_‡K wb‡P ‡M‡j A_ev wb‡P ‡_‡K Dc‡i ‡M‡j ‡`Lv hvq, = 1Gi Wvb Ges evg cv‡k dvsk‡bi gvb

GKB fv‡e e…w× cvq; cÖK…Zc‡¶ = 1 Gi Dfq cv‡k dvsk‡bi gvb GKB _vK‡e, hvi me©wbgœ gvb ( ) = −2|

cybivq, GB ai‡bi gv‡bi ZvwjKv dvsk‡bi ‡jLwPÎ `¶Zvi mv‡_ AsKb Ki‡Z mvnvh¨ K‡i|

me©wbgœ gvb (1) = −2 ‡_‡K ïiæ K‡i Gi gvb Dfq w`‡K GK GKK evovi mv‡_ mv‡_ dvsk‡bi gvb 1,3,5,7
Gfv‡e e…w×cÖvß nq |

hw`I dvsk‡bi ‰ewkó¨ ‡evSvi Rb¨ ‡jLwPÎ myweavRbK, gv‡bi ZvwjKv dvsk‡bi ‡jLwP‡Îi AvKvi Ges Gi ‰ewkó¨

m¤ú‡K© aviYv ‡`q| ClassWiz wØNvZ dvsk‡bi ‡jLwP‡Îi ‰ewkó¨ ‡evSvi Rb¨ Av‡iv AwaK Z_¨ w`‡Z
m¶g|wze¨envi K‡i Equation/Function mode-G ‡h‡Z n‡e| Gici wb‡Pi g‡Zv K‡i 2 NvZ hy³
Polynomial dvskb wba©viY Ki‡Z n‡e|

wØNvZ dvsk‡bi wZbwU mnM 1, −2 Ges −1 cÖ‡Z¨KwUi c‡i = evUb ‡P‡c cÖ‡ek Kiv‡Z n‡e|

Zvici Avevi = evUb Pvc‡j dvskbwUi `yBwU g~j I wb‡Pi g‡Zv K‡i cÖ`k©b Ki‡e|
2
1

me‡k‡l, = `yB evi Pvc‡j (1, −2) we›`y‡Z cive…‡Ëi Pig gv‡bi ¯’vbvsK (1, −2) cÖ`k©b Ki‡e|

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