Page 129 - Bangladesh_classwiz_BOOK2018_rev_Neat

Øv`k Aa¨vq

K¨vjKzjvm

(Calculus)

†Kv‡bv wKQzi wbiwew”Qbœ cwieZ©‡bi MvwYwZK Aa¨qbB n‡jv K¨vjKzjvm|

 MwYZ, msL¨v wb‡q KvR K‡i †hgb msL¨vi †hvM, we‡qvM, ¸Y, fvM BZ¨vw`|
2
2
2
 exRMwYZ msL¨vi wfZ‡i c¨vUvb© Lyu‡R †ei Kivi †Póv K‡i ‡hgb + = GKwU ¸iæZ¡c~Y mgxKiY
©
hv mg‡KvYx wÎf~‡Ri evûMywji gv‡S m¤úK© wb‡`©k K‡i| exRMwY‡Zi gva¨‡g mg¯Í msL¨vi †mU cvIqv m¤¢e
hv H m¤úK© †g‡b P‡j, - hw` I Rvbv _v‡K Zvn‡j Gi gvb mn‡RB †ei Kiv hv‡e|
 Avi K¨vjKzjvm mgxKiY mg~‡ni c¨vUvb© Lyu‡R †ei Kivi ‡Póv K‡i| K¨vjKzjvm e¨envi K‡i mgxKiY
msµvšÍ wb‡gv³ mKj cÖ‡kœi DËi †`qv m¤¢e|

 wKfv‡e mg‡qi mv‡_ mv‡_ GKwU mgxKi‡Yi gvb e„w× cvq ev n«vm cvq
 KLb GwU Zvi m‡e©v”P ev me©wb¤œ gv‡b †cŠuQvq?
 wKfv‡e PjK e¨envi Ki‡Z n‡e hLb Zviv wbiwew”Qbœ fv‡e cwiewZ©Z n‡Z _v‡K (†hgb Zvc, MwZ,

RbmsL¨v.......... BZ¨vw`) Ges AviI A‡bK wKQz|
exRMwYZ I K¨vjKzjvm n‡jv mgm¨v mgvav‡bi Rb¨ gvwbK‡Rvo ¯^iƒc; K¨vjKzjvm bZzb bZzb mgxKiY Lyu‡R †ei

K‡i Avi exRMwYZ Zvi mgvavb K‡i|
ClassWiz K¨vjKz‡jU‡ii gva¨‡g cÖv_wgK K¨vjKzjv‡mi †ek wKQ w`K Dc¯’vcb I ch©‡eÿY Kiv hvq| Calculate
z
I Table mode e¨envi K‡i K¨vjKzjv‡mi ch©‡eÿY I dvsk‡bi wewfbœ welq m¤ú‡K© mg¨K aviYv jvf Kiv hvq|
K¨vjKz‡jUiwU‡K BbcyU, AvDUcy‡Ui Rb¨ Math mode G ivL‡Z n‡e|

12.1 wjwgU
wjwgU K¨vjKzjv‡mi me‡P‡q cÖv_wgK aviYv| Gi gva¨‡gB AšÍixKiY I †hvMRxKi‡Yi e¨vL¨v †`Iqv hvq| gv‡bi
ZvwjKv e¨envi K‡i ‡Kv‡bv dvsk‡bi wjwg‡Ui gvb, we‡kølY Kiv hvq| D`vniY¯^iƒc, GKwU wjwgU †bIqv n‡jv|

→ 0
0
jÿYxq†h, = 0 Gi Rb¨ ni Ges je DfqB 0 n‡e A_©vr dvskbwU AvKv‡ii hv Awb‡Yq| GB wjwgU
©
0
we‡køl‡Yi Rb¨ GKwU gv‡bi ZvwjKv cÖ¯‘Z Kiv n‡jv †hLv‡b Gi gvb¸‡jv 0 Gi KvQvKvwQ †bIqv n‡q‡Q| j¶¨
ivL‡Z n‡e K¨vjKz‡jUi †hb Radian mode G _v‡K| Table mode- G ( ) Gi gvb wn‡m‡e dvskbwU cÖ‡ek
Kiv‡Z n‡e Ges , Ges gvb wn‡m‡e h_vµ‡g −1,1 I 0.1 wb‡Z n‡e|

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