Page 30 - Bangladesh_classwiz_BOOK2018_rev_Neat

hLb A‡bK¸‡jv gvb ‡`qv _vK‡e ZLb r e¨envi Kiv AwaK myweavRbK| D`vniY¯^iƒc aiv hvK, = −1,2

Ges 3 Gi Rb¨ ‡Kv‡bv gvbwU dvsk‡bi g~‡ji KvQvKvwQ, ‡hLv‡b ( ) = 0, Zv ‡ei Ki‡Z n‡e| ‡h ivwkwUi gvb
‡ei Ki‡Z n‡e Zv [ (wKš‘ = bv ‡P‡c ) ‡P‡c K¨vjKy‡jU‡i cÖ‡ek Kiv‡bv hvq-

dvskbwUi gvb ‡ei Kivi Rb¨ r Kx Pvc‡j K¨vjKy‡jUi Gi eZ©gvb gvb cÖ`k©b Ki‡e (G‡¶‡Î = 2),
hv w¯Œ‡bi wb‡Pi As‡k cÖ`wk©Z n‡e| = Pvcvi c‡i Gi Kvw•LZ gvb cÖ‡ek Ki‡j GwU bZyb gvb cÖ`k©b Ki‡e
hv wb‡P gv‡Si w¯Œ‡b ‡`Lv‡bv n‡q‡Q| ivwkwUi gvb ‡ei Kivi Rb¨ cwi‡k‡l = Kx Pvc‡Z n‡e| djvdjwU wb‡P
wZb bv¤^vi w¯Œ‡b ‡`Lv‡bv n‡q‡Q|

Í
cybivq = evUb ‡P‡c GB c×wZwU Ab¨vb¨ gv‡bi Rb¨ Pvjy ivLv hvq| C evUb bv Pvcv ch©š A_ev
K¨vjKy‡jU‡ii Mode cwieZ©b bv Kiv ch©šÍ CALC ‡cÖv‡mm Pvjy _vK‡e| GB c×wZ‡Z `¶Zvi mv‡_ A‡bK¸‡jv
gvb ‡ei Kiv m¤¢e|

wb‡Pi w¯Œ‡b ‡`Lv hv‡”Q ‡h, (2) = 1 I (3) = 10 GB wZbwU gvb ‡_‡K Abyaveb Kiv hvq, = 2 Gi Rb¨
Gi gvb dvsk‡bi GKwU g~‡ji KvQvKvwQ|

ClassWiz G gvb msi¶‡Yi Rb¨ A ‡_‡K F, x, y I M me©‡gvU 9 wU ‡g‡gvwi Kx i‡q‡Q| GB ‡g‡gvwi Kx ¸‡jv
e¨envi K‡i GKvwaK PjKwewkó ivwki gvbI CALC myweavi gva¨‡g ‡ei Kiv hvq| D`vniY¯^iƒc ejv hvq, hw`
AI BGKwU mg‡KvYx wÎfy‡Ri `yBwU mg‡KvY mwbœwnZ evû wb‡`©k K‡i Zvn‡j AwZfy‡Ri gvb n‡e-

2
2
√( + )
GB ivwkwU K¨vjKy‡jU‡i cÖ‡ek Kwi‡q r Kx Pvc‡Z n‡e|

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