Ответ: 20 . D ; 21 . C ; 22 . D .

Пошаговое объяснение:

20 . f(x) = ( 3 - 4x )³ ; f '(x) = 3 ( 3 - 4x )² * ( 3 - 4x )' = 3 ( 3 - 4x )² *( - 4 )= - 12 (3 - 4x )² .

21 . f(x) = 1 /( 6x - 1 )⁵ = ( 6x - 1 )⁻ ⁵ ; f '(x) = - 5 (6x - 1 )⁻⁶ * (6x - 1 )' =- 5 (6x - 1 )⁻⁶ * 6 =

= 30 (6x - 1 )⁻⁶ = 30 / (6x - 1 )⁻⁶ .

22 . y = ( 2x - 1 )³ ; x₀ = 2 ; drtty666y

y' = 3 ( 2x - 1 )² * ( 2x - 1 )' = 3 ( 2x - 1 )² * 2 = 6 ( 2x - 1 )² ; y' = 6 ( 2x - 1 )² ;

y' ( 2 ) = 6 * (2*2 - 1 )² = 6 * 9 = 54 .