Page 48 - Bangladesh_classwiz_BOOK2018_rev_Neat

Z…Zxq Aa¨vq

exRMvwYwZK ivwk

(Expression)

cvwUMwY‡Zi me©vqbK…Z iƒcB n‡jv exRMwYZ| KZ¸‡jv cÖwµqvwPý †hgb +, −, ×, ÷ Gi mvnv‡h¨ GK ev
GKvwaK msL¨v wb‡`©kK cÖZxK‡K A_©‡evaKfv‡e mvRv‡j Zv‡K exRMvwYwZK ivwk e‡j| †hgb †h ‡Kv‡bv msL¨v
1, 5, 9 BZ¨vw`i cwie‡Z© , e¨envi Kiv hvq| exRMvwYwZK ivwk‡Z †h msL¨v¸‡jv e¨envi Kiv nq Zv‡`i gvb
wbw`©ó, G‡`i aªæeK e‡j| Ab¨w`‡K †h cÖZxK¸‡jv e¨envi Kiv nq Zv‡`i‡K PjK e‡j| Pj‡Ki gvb wbw`©ó bq Ges
G‡`i gvb cwiewZ©Z nq| exRMvwYwZK m~Î, Drcv`‡Ki gva¨‡g exRMvwYwZK ivwki Dc¯’vcb I we‡kølY Ges G¸‡jvi
gva¨‡g mgm¨vi mgvavbB n‡jv exRMwY‡Zi wfwË| GB Aa¨v‡q ClassWiz K¨vjKz‡jUi e¨envi K‡i wb‡¤œv³
welq¸‡jv m¤c‡K© Av‡jvPbv Kiv n‡e-

©
 exRMvwYwZK ivwki gvb wbYq
 Solve e¨envi K‡i gvb wbY©q
 Drcv`K we‡kølY
 Store dvskb e¨envi K‡i fvM‡kl wbYq Ges
©
 k~b¨vqb c×wZ‡Z Drcv`‡K we‡kølY

GRb¨ GB Aa¨v‡q Calulate mode, Equation mode Ges Solve I Fact dvskb e¨envi Kiv n‡e|

3.1 exRMvwYwZK ivwki gvb wbY©q
3
3
aiv hvK, GKwU ivwk (3 − 5 ) + (4 − 2 ) + 3( − )(3 − 5 )(4 − 2 )| ivwkwU‡Z
mnM¸‡jv ‡hgb 3, −5, 4, −2 … … … ..G¸‡jv n‡jv aªæeK| cÿvšÍ‡i I n‡jv PjK| A_©vr, I Gi gvb
cwiewZ©Z n‡Z cv‡i| I Gi wewfbœ gv‡bi Rb¨ ivwkwUi gvb wewfbœ nq|

aiv hvK, = 7 I = −5 gvb `yBwU h_vµ‡g I †g‡gvwi‡Z Jz(A ) I Jx(B) †P‡c msiÿY
Kiv n‡jv| GiciQ e¨envi K‡i ivwkwU‡K K¨vjKz‡jU‡i cÖ‡ek Kwi‡q = evUb Pvc‡j wb‡Pi w¯Œ‡bi g‡Zv
djvdj cÖ`wk©Z n‡e|

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