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ЛЕКЦІЇ ² ВПРАВИ

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14.4. ÅËÅÌÅÍÒÈ ÂÈÙί ÌÀÒÅÌÀÒÈÊÈ<br />

14.4.1. Òàáëèöÿ ïîõ³äíèõ<br />

14.4.2. Îñíîâí³ ïðàâèëà äèôåðåíö³þâàííÿ (çíàõîäæåííÿ<br />

ïîõ³äíèõ):<br />

± ′ = ± ′ = = ;<br />

( f g) f′ g′ ; ( cg) cg′<br />

( c const)<br />

′<br />

′ ⎛f ⎞ fg ′ − fg′<br />

⎜<br />

g<br />

⎟<br />

.<br />

⎝ ⎠ g<br />

( fg) = f′ g + fg′<br />

; =<br />

2<br />

14.4.3. Äèôåðåíö³þâàííÿ ñêëàäåíî¿ ôóíêö³¿:<br />

( ), (),<br />

( ())<br />

y = f x x = ϕ t y = f ϕ t ,<br />

t x t<br />

( ) ( )<br />

y′ = y′ x′ = f′ x ϕ ′ t .<br />

14.4.5. гâíÿííÿ äîòè÷íî¿ äî ãðàô³êà äèôåðåíö³éîâíî¿<br />

ôóíêö³¿ (ðèñ. 14.7):<br />

Ðèñ. 14.7<br />

( ) ′( )( )<br />

y− f x = f x x− x .<br />

0 0 0<br />

14.4.6. Îñíîâí³ íåâèçíà÷åí³ ³íòåãðàëè (a, α, C =<br />

const):<br />

14.1. ∫ adx = ax + C . 14.2. ∫sin xdx =− cos x + C .<br />

504 505

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