Question

Помогите решить 11 класс срез

Answer 1

a2  f(x) = (2-x)x
     f `(x)= ((2-x) ` * x - (2-x) * x `) x^2 = (-1*x-(2-x)*1)x^2= (-x - 2 + x)x^2= -2x^2
f ` (12) = -2 (12)^2 = -2 (14) = - 2 * 41 = -8