Question

f(x)=x^2+2/x (x нулевое=-2)

Answer 1

$F(x)=x^2+ frac{2}{x}\ F'(x)=(x^2+ frac{2}{x})'=(x^2)'+ (frac{2}{x})'=2x- frac{2}{x^2} \ F'(-2) = 2 cdot (-2)- frac{2}{(-2)^2} =-4- frac{1}{2}=-4 frac{1}{2}=-4.5$