Page 66 - Bangladesh_classwiz_BOOK2018_rev_Neat

cÂg Aa¨vq

mij mnmgxKiY

(Simultaneous Equation)

mij mnmgxKiY ej‡Z GKvwaK PjKwewkó GKvwaK mij mgxKiY‡K eySvq hv‡`i hyMcr mgavb †ei Ki‡Z nq|
Giƒc GKvwaK mgxKiY‡K GK‡Î mij mgxKiY †RvUI e‡j| Equation Mode Gi gva¨‡g `yB, wZb ev Pvi PjK
wewkó System of linear equation mgvavb Kiv hvq| GB Aa¨v‡q ClassWiz K¨vjKz‡jUi e¨envi K‡i wb‡¤œv³
welq¸‡jv m¤c‡K© Av‡jvPbv Kiv n‡e-

 `yB PjKwewkó

 wZb PjKwewkó I
 Pvi PjKwewkó

GRb¨ Equation/Function mode e¨envi Ki‡Z n‡e|

5.1 `yB PjKwewkó mij mnmgxKi‡Yi mgvavb

`yB PjKwewkó mij mnmgxKi‡Y mvaviYZ I `yBwU PjK e¨envi Kiv nq| `yBwU mgxKiY e¨envi K‡i I
Gi gvb ‡ei Ki‡Z nq| cÖ_‡g wz(A) †P‡c Equation/Function mode-G cÖ‡ek Ki‡Z n‡e| 1

Pvcvi gva¨‡g simultaneous equation wbe©vPb Kivi ci KZ¸‡jv PjK Av‡Q Zv wba©viY Ki‡Z n‡e| mvaviYZ
‡Kv‡bv mij mnmgxKi‡Yi mgvav‡bi Rb¨ PjK I mgxKi†Yi msL¨v mgvb n‡Z nq|

cÖ‡Z¨K ‡¶‡Î c×wZwU GKB iKg| `yB PjK wewkó GKwU mij mnmgxKiY ‡bIqv n‡jv-

2 − 5 = 3

+ 3 = 1

GB mij mnmgxKi‡Yi mgvavb Kivi Rb¨2 Pvcvi gva¨‡g `yB PjK wewkó mgxKiY wba©viY Ki‡Z n‡e| mgxKiY
`yBwU K¨vjKy‡jU‡i cÖ‡ek Kiv‡bvi Rb¨ aªæeK gvb¸‡jv‡K = wP‡ýi Wvbcv‡k ivL‡Z n‡e| Gici wb‡Pi g‡Zv
K‡i QqwU gvb K¨vjKz‡jU‡i cÖ‡ek Kiv‡Z n‡e| cÖ‡Z¨KwU gvb cÖ‡ek Kiv‡bvi ci = evUb Pvc‡Z n‡e| ‡h‡Kv‡bv

fy‡ji Rb¨ Kvm©iwU‡K wcQ‡b wb‡q wM‡q ms‡kvab Kiv hvq| gvb¸‡jv cÖ‡ek Kiv‡bvi c‡i = evUb Pvc‡j Gi
gvb cvIqv hv‡e| cybivq = evUb Pvc‡j Gi gvb cvIqv hv‡e| G¸‡jvB n‡jv mgxKiY †Rv‡Ui mgvavb|

61