Question

se considera functia f:R/{-1}->R, f(x)=x²-x-1 supra x+1 calculati lim cand x->-2 din f(x)

Answer 1

$\lim_{x \to \ -2 } \frac{x^2-x-1}{x+1}= \frac{(-2)^2+2-1}{-2+1}= \frac{4+2-1}{-1}=-5$