Page 76 - Bangladesh_classwiz_BOOK2018_rev_Neat

jÿYxq†h , , mgvav‡bi AvK…wZ eySv‡bvi Rb¨ cÖ`wk©Z n‡q‡Q|

6.3 PZzN©vZhy³ AmgZv

Casio ClassWiz G PZzN©vZ ch©šÍ AmgZvi mgvavb Kiv hvq| Gi Rb¨ wx ‡P‡c cÖ_‡g inequality

mode wbe©vPb Kivi ci 4 ‡P‡c PZzN©vZ wbe©vPb Ki‡j wb‡Pi w¯Œ‡bi g‡Zv GKwU w¯Œb Avm‡e|

Dc‡ii w¯Œ‡b PZzN©vZhy³ AmgZvi PviwU Av`k©iƒc cÖ`wk©Z n‡q‡Q|
2
4
aiv hvK, − 10 + 9 ≥ 0 AmgZvwUi mgvavb Ki‡Z n‡e| Gi Rb¨ 3 Pvcvi ci = 1, = 0, =
−10, = 0, = 9 cÖ‡ek Kiv‡Z n‡e| Gici = evUb Pvc‡j wb‡Pi wØZxq w¯Œ‡bi g‡Zv djvdj cÖ`wk©Z
n‡e|

D`vniYgvjv

2
3
1| + 4 > + 4
3
2
mgvavb- cÖ_‡g AmgZvwU‡K Nv‡Zi wb¤œµg Abymv‡i mvwR‡q wb‡Z n‡e| A_©vr + 4 − − 4 > 0 Gici
K¨vjKz‡jU‡i wx Pvcvi ci 3 †P‡c wÎNvZ wbe©vPb Ki‡Z n‡e| Gici 1 †P‡c Av`k© AvKvi wbe©vPb
Kivi ci = 1, = 4, = −1, = −4 cÖ‡ek Kwi‡q = Pvc‡j djvdj cÖ`wk©Z n‡e|

(Key log- wx311=4=p1=p4==)

2
2| 5 + − 2 < 0
mgvavb- wx Pvcvi ci 2 †P‡c wØNvZ AmgZv wbe©vPb Ki‡Z n‡e| Gici Avevi 2 †P‡c AmgZvi

Av`k© AvKvi wbe©vPb K‡i = 5, = 1, = −1 cÖ‡ek Kwi‡q = Pvc‡j djvdj cÖ`wk©Z n‡e|

71