Page 98 - Bangladesh_classwiz_BOOK2018_rev_Neat

wMÖK eY© ′Σ′ n‡jv Bs‡iRx eY© S-Gi mgZzj¨, Avi GB S G‡m‡Q ‘Sum’ ev †hvMdj †_‡K| Σ Gi wb‡Pi I Dc‡ii

mxgvi gvb, †h msL¨v¸‡jv †hvM Ki‡Z n‡e Zvi cÖ_g I †kl gvb wb‡`©k K‡i| G‡ÿ‡Î mvaviY c`wU n‡jv hv
¯^vfvweK msL¨vi Abyµg‡K wb‡`©k K‡i| * Kx (q[) e¨envi K‡i K¨vjKz‡jU‡i avivi †hvMdj cvIqv
hvq| wKš‘ †mRb¨ mvaviY c`wU Rvbv _vK‡Z n‡e| Abyµ‡gi mvaviY c`wUi Rb¨ Aek¨B ([) e¨envi Ki‡Z
n‡e| mxgvi gvb¸‡jv cÖ‡ek Kiv‡bvi mgq GK ¯’vb †_‡K Av‡iK ¯’v‡b hvIqvi Rb¨ !$ e¨envi Ki‡Z n‡e|

Dc‡ii w¯Œ‡b cÖ_g 5 wU Ges cÖ_g 9 wU ¯^vfvweK msL¨vi †hvMdj ‡`Lv‡bv n‡q‡Q| wØZxq ivwkwU cvIqvi Rb¨ cÖ_g
†_‡K ïiæ Kivi †P‡q ! Kx e¨envi K‡i m¤cv`bv Kiv AwaK myweavRbK|

A‡bK avivi Amxg msL¨K c` we`¨gvb hv K¨vjKz‡jU‡i m¤ú~Y©iƒ‡c Dc¯’vcb Kiv m¤¢e bq| wKš‘ A‡bK¸‡jv c`
†hvM Kivi gva¨‡g fv‡jv aviYv cvIqv m¤¢e| D`vniY¯^iƒc, GKwU Amxg ¸‡YvËi aviv-

1 1 1 1 1
1 + + + + ⋯ + ⋯ … . . = ∑
2 4 8 2 2
0
GB avivi c`¸‡jv avivevwnKfv‡e †hvM Ki‡Z _vK‡j djvdj wb‡Pi w¯Œ‡bi g‡Zv 2 Gi KvQvKvwQ n‡e-

hw`I †hvMdj KL‡bv 2 n‡e bv wKš‘ 32 wU c‡`i c‡i K¨vjKz‡jUi wb‡Pi g‡Zv djvdj cÖ`k©b Ki‡e|

‡h‡nZz avivwUi mvaviY c` Rvbv Av‡Q ZvB GwU wb‡Pi Table-Gi gva¨‡gI ch©‡eÿY Kiv m¤¢e|

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