Question

Вычислите f'(-2), если f(x)=x^2-1/x^2+1

Answer 1

f (x)=x²-1/x²+1
f '(x)=(x²-1/x²+1)'=2x+1/x
f'(-2)=2·(-2)+1/(-2)=-4-1/2=-4 1/2