Page 57 - Bangladesh_classwiz_BOOK2018_rev_Neat

( ) Kjv‡gi ‡Kv‡bv gvbwU k~b¨ A_ev k~‡b¨i KvQvKvwQ Zv Lyu‡R ‡ei Kivi Rb¨ Kvm©i Gi E I R evUb
e¨envi Ki‡Z n‡e| ( ) Gi gvb ‡Kv_vq abvZ¥K ‡_‡K FYvZ¥‡K cwiewZ©Z nq Zv ‡Lqvj ivL‡Z n‡e| ‡Kbbv
k~b¨ gvbwU Gi wfZ‡i _v‡K|

G‡¶‡Î ‡`Lv hvq ‡h, gv‡bi ZvwjKvq Ggb ‡Kv‡bv gvb ‡bB hvi Rb¨ ( ) = 0. wKš‘ −1 < < 0,
0 < < 1 Ges 2 < < 3 Gi wfZ‡i wP‡ýi cwieZ©b n‡q‡Q, hv ‡_‡K ‡evSv hvq ‡h GB wZbwU e¨ewai gv‡S

dvsk‡bi g~j¸‡jv we`¨gvb| GLv‡b ïaygvÎ GKwU e¨ewa 0 < < 1 ch©‡e¶Y Kiv n‡jv|
C evUb ‡P‡c dvsk‡b hvIqvi ci Av‡iv fv‡jvfv‡e ch©‡e¶‡Yi Rb¨ Start, End I Step gvb wn‡m‡e 0,1 Ges
0.1 e¨envi Kiv n‡jv|

GB ‡UwejwU fv‡jvg‡Zv j¶¨ Ki‡j ‡`Lv hv‡e, hLb = 0.6 ZLb dvskbwUi GKwU abvZ¥K gvb i‡q‡Q| hLb
= 0.7, ZLb dvsk‡bi gvb FYvZ¥K| ZvB GB `yB gv‡bi wfZ‡i ‡Kv_vI Gi gvb k~b¨ n‡e|

0.6 ≤ ≤ 0.7 Ges Av‡iv ‡QvU e¨eavb 0.01 e¨envi K‡i gv‡bi ZvwjKv ‰Zixi c×wZi cybive…wË Ki‡Z n‡e|
wb‡Pi wP‡Î K¨vjKy‡jU‡ii wØZxq w¯ŒbwU djvdj cÖ`k©b Ki‡Q|

Dc‡ii PZy_© I lô w¯Œ‡bi g‡Zv h_vµ‡g [0.65,0.66] I [0.652,0.653] e¨ewai Rb¨ GB c×wZi cybvive…wË
n‡j e¨eavb ‡QvU n‡Z _vK‡e| ‡h‡nZy cÖ‡Z¨Kevi avc¸‡jv `‡ki ¸wYZK wnmv‡e n«vm cvq, ZvB djvdjwU mwVK
g~‡ji KvQvKvwQ n‡e| Z…Zxq w¯Œ‡b ‡`Lvq ‡h, = 0.6527 I = 0.6528 Gi gv‡S dvsk‡bi gvb k~b¨|

GB ZvwjKv¸‡jv ‡`Lvq ‡h ≈ 0.653 mgxKi‡bi mgvav‡bi KvQvKvwQ| GB c×wZ Pvwj‡q ‡M‡j mgvav‡bi Av‡iv
KvQvKvwQ ‡cŠuQv‡bv m¤¢e| wKš‘ ‡h‡nZy msL¨v¸‡jv Ag~j` ZvB KL‡bvB cy‡ivcywi mwVK gvb cvIqv hv‡e bv|

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