Page 45 - Bangladesh_classwiz_BOOK2018_rev_Neat

(Key log- w9[d==p5=5=1==)

gv‡bi ZvwjKv ch©‡e¶Y Ki‡j ‡`Lv hv‡e ‡h, < 0 Gi Rb¨ ( )Gi gvb¸‡jv > 0 Gi Rb¨ ( ) Gi

gvb¸‡jvi Abyiƒc| ‡hgb (−1) = 1Ges (1) = 1, (−2) = 4 Ges (2) = 4 .A_©vr
( ) = ( ), AZGe dvskbwU GK-GK bq|
1
2

9. − {1,2,3,4} dvskbwU ( ) = 2 + 1 Øviv msÁvwqZ| dvskbwU GK-GK I mvwe©K (AbUy/Onto)
©
wKbv Zv wbYq Ki‡Z n‡e|

mgvavb- cÖ_‡g Table mode G wM‡q Ges Step gvb wn‡m‡e 1, 4 I 1 cÖ‡ek Kiv‡j GB e¨ewai g‡a¨ gv‡bi
ZvwjKv cÖ`wk©Z n‡e, hv wb‡Pi wP‡Î cÖ`wk©Z n‡q‡Q|

(Key log- w92[+1==1=4=1==)

gv‡bi ZvwjKv j¶¨ Ki‡j ‡`Lv hv‡e Gi cÖ‡Z¨KwU gv‡bi Rb¨ Gi cÖ‡Z¨KwU gvb Avjv`v| myZivs dvskbwU
GK-GK| wKš‘ AbUy bq| Kvib GLv‡b ‡iÄ R Gi mKj gvb ‡Wv‡gb {1,2,3,4} Gi cÖwZwe¤^ bq|

2
10. = − 4 − 1 wØNvZ dvskbwUi ‡jLwPÎ AuvK‡Z n‡e|

mgvavb- cÖ_‡g Table mode G wM‡q dvskbwU K¨vjKy‡jU‡i cÖ‡ek Kiv‡Z n‡e| Zvici Start, End Ges Step
gvb cÖ‡ek Kiv‡bv n‡j wb‡Pi w¯Œ‡bi g‡Zv gv‡bi ZvwjKv cÖ`wk©Z n‡e| GB gvb¸‡jv ‡_‡K dvskbwUi ‡jLwPÎ
m¤ú‡K© aviYv cvIqv hv‡e|

(Key log- w9[dp4[p1==p1=5=1==qT)

ZvwjKv j¶¨ Ki‡j ‡`Lv hvq ‡h, = 2 Gi Rb¨ ( ) = −5 . = 2 Gi Dfq cv‡k¦©i we›`y 1 I 3 Gi Rb¨
( ) Gi gvb GKB I Zv −4 . myZivs = 2 ‡Z GKwU Pig gvb i‡q‡Q| = −2 Gi Dfq cv‡k Gi
Ab¨vb¨ gv‡bi Rb¨ ( ) Gi gvb µgvš^‡q e…w× ‡c‡q‡Q| myZivs (2, −5) we›`ywU wØNvZ dvskbwUi me©wbgœ we›`y|
QR ‡Kv‡Wi gva¨‡g cÖvß dvsk‡bi ‡jLwPÎwU wb‡P ‡`Lv‡bv n‡jv|

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