Page 52 - Bangladesh_classwiz_BOOK2018_rev_Neat

Dc‡ii w¯Œb¸‡jv n‡Z †`Lv hv‡”Q †h = 2 Gi Rb¨ ivwkwUi gvb k~b¨| myZivs ( − 2) ivwkwUi GKwU Drcv`K|

`ªóe¨: hw` aªæe msL¨vwUi Drcv`Kmg‡ni abvZ¥K I FYvZ¥K ‡Kv‡bv gv‡bi Rb¨B ivwkwUi gvb k~b¨ bv nq, Zvn‡j
~
cÖ_‡g †`L‡Z n‡e †h ivwkwU‡Z we`¨gvb m‡e©v”P NvZhy³ Pj‡Ki mnM Av‡Q wKbv, hw` _v‡K Zvn‡j aªæe msL¨vwU‡K
H mnM Øviv fvM Ki‡Z n‡e| Gici fvMd‡ji Drcv`Kmg~‡ni abvZ¥K I FbvZ¥K gv‡bi Rb¨ cybivq cixÿv Ki‡Z

n‡e †h, ‡Kv‡bv gv‡bi Rb¨ k~b¨ Av‡m wKbv| †h gv‡bi Rb¨ k~b¨ n‡e Zv Gi mv‡_ we‡qvM AvKv‡i wjL‡j hv
cvIqv hv‡e †mwU n‡e D³ ivwkwUi GKwU Drcv`K| hw` aªæe msL¨vwU‡K fvM Ki‡j fMœvsk Av‡m Zvn‡j †m‡ÿ‡Î
Drcv`K †ei bv K‡i ïay H gvbwU w`‡qB cixÿv Ki‡Z n‡e|
3
2
‡hgb 4 − 5 + 5 − 1 ivwkwU‡Z aªæe msL¨v n‡jv 1| 1 Gi Drcv`K 1| myZivs 1 Gi abvZ¥K I FYvZ¥K
gvb A_©vr 1 Ges −1 Gi Rb¨ ivwkwUi gvb cvIqv hvq h_vµ‡g 3 I −15| wKš‘ aªæe msL¨v 1 †K ivwkwUi m‡e©v”P
1
1
1
3
NvZhy³ PjK Gi mnM 4 Øviv fvM Ki‡j fvMdj nq | Gi Rb¨ ivwkwUi gvb nq 0| myZivs − ev
4 4 4
4 − 1 n‡jv ivwkwUi GKwU Drcv`K|
hw` Gfv‡eI ivwkwUi gvb k~b¨ bv nq Zvn‡j k~b¨vqb c×wZ‡Z Drcv`K †ei Kiv m¤¢e n‡e bv|

D`vniYgvjv

1| 24 Gi Drcv`K¸‡jv †ei Ki‡Z n‡e|

mgvavb- K¨vjKz‡jUi‡K Calulate mode G wb‡q 24 †K cÖ‡ek Kwi‡q = evUb Pvc‡Z n‡e| Gici qx

(FACT) Pvc‡j w¯Œ‡bi g‡Zv djvdj cÖ`wk©Z n‡e|

(Key log- 24=qx)

3
K¨vjKz‡jU‡i 24 Gi ïaygvÎ ‡gŠwjK Drcv`K¸‡jv cÖ`k©b K‡i| †h‡nZz 2 × 3 AvKv‡i Av‡Q ZvB evwK
3
2
2
3
Drcv`K¸‡jv n‡e 2 = 4, 2 = 8, 2 × 3 = 6, 2 × 3 = 12, 2 × 3 = 24 I 1

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