Page 56 - Bangladesh_classwiz_BOOK2018_rev_Neat

PZz_© Aa¨vq

GK PjK wewkó mgxKiY

(One Variable Equation)

©
exRMwY‡Zi GKwU Ab¨Zg ¸iæZ¡c~Y kvLv n‡jv ÔmgxKiYÕ| ClassWiz G mgxKiY mgvav‡bi Rb¨ wewfbœ iKg
c×wZ i‡q‡Q| D³ K¨vjKy‡jU‡ii gva¨‡g mgxKi‡Yi mwVK mgvavb cvIqv hvq, Ges mgxKi‡Yi mwVK msL¨vZvwË¡K
we‡kølY m¤¢e nq| GB Aa¨v‡q ClassWiz K¨vjKz‡jUi e¨envi K‡i wb‡¤œv³ welq¸‡jv m¤c‡K© Av‡jvPbv Kiv n‡e-

 Table mode e¨envi K‡i mgxKi‡Yi mgvavb
 Solve dvskb e¨envi K‡i mgxKi‡Yi mgvavb
 `ywU Table e¨envi K‡i mgxKi‡Yi mgvavb
 Equation mode e¨envi K‡i wØNvZ mgxKi‡Yi mgvavb
 wÎNvZ mgxKi‡Yi mgvavb Ges
 PZzN©vZ I cÂNvZ wewkó mgxKi‡Yi mgvavb wbY©‡qi c×wZ

‡mRb¨ SETUP (qw) e¨envi K‡i K¨vjKy‡jUiwU‡K MathI/MathO mode-G Ges Norm 2 ‡Z
ivL‡Z n‡e|

4.1 Table mode e¨envi K‡i mgxKi‡Yi mgvavb

GK PjK wewkó mgxKiY mgvavb Kivi Rb¨ PjKwUi ‡h gv‡bi Rb¨ (hw` ‡Kv‡bv gvb ‡_‡K _v‡K) mgxKiYwU mZ¨
nq Zv Lyu‡R ‡ei Ki‡Z nq| gv‡bi ZvwjKv e¨envi K‡i mgxKi‡Yi mgvavb Kivi Rb¨ KZ¸‡jv Dcvq i‡q‡Q|

3
2
3
D`vniY¯^iƒc aiv hvK, GKwU mgxKiY = 3 − 1| D³ mgxKi‡Yi mgvavb¸‡jv Ges mgxKiY −
2
3 + 1 = 0 Gi mgvavb¸‡jv GKB| K¨vjKy‡jUi e¨envi K‡i GB dvsk‡bi gv‡bi ZvwjKv ‰Zwi Kiv hvq Ges
Gi ‡h gv‡bi Rb¨ (hw` ‡Kv‡bv gvb _v‡K) dvskbwUi gvb k~b¨ nq Zv Lyu‡R ‡ei Kiv m¤¢e|
cÖ_‡g w9 e¨envi K‡i Table mode-G cÖ‡ek Ki‡Z n‡e| ClassWiz G GKwU A_ev `yBwU dvsk‡bi

gv‡bi ZvwjKv ‰Zwi Kiv m¤¢e| hLb GKwU dvskb e¨envi Kiv cÖ‡qvRb nq, ZLb SETUP G wM‡q (wb‡Pi wP‡Îi
g‡Zv) GKwU dvskb wbe©vPb K‡i ZvwjKv ‰Zwi Kiv hvq A_ev mnRfv‡e ( ) Gi ‡Kv‡bv BbcyU bv w`‡qI GKwU
dvsk‡bi ZvwjKv Kiv hvq|

2
3
wb‡Pi wP‡Îi g‡Zv K‡i, ( ) G − 3 + 1 dvskbwU cÖ‡ek Kiv‡bv n‡jv| (j¶Yxq ‡h, qd e¨envi
3
K‡i mivmwi cÖ‡ek Kiv‡bv hvq) dvskbwUi Rb¨ h‡_vchy³ e¨ewa wb‡q gv‡bi ZvwjKv ‰Zwi Ki‡Z n‡e,hv =
evUb Pvcvi gva¨‡g ïiæ Ki‡Z n‡e| G‡¶‡Î mgvavb m¤ú‡K© ‡Kv‡bv aviYv bv _vKvq GKwU we¯Í…Z e¨ewa e¨envi
KivB ‡k«q| ‡h‡nZy K¨vjKy‡jUiwU ïaygvÎ 30 wU gvb ‡`Lv‡Z m¶g, ZvB wb‡Pi w¯Œ‡bi g‡Zv Gi gvb -14 ‡_‡K
Í
15 ch©š Ges e¨ewa 1 wb‡q ‡`Lv‡bv n‡jv| , Ges gvb emv‡bvi ci = evUb Pvc‡Z n‡e|
51