Question

Raíz cúbica( x^2 - 1 ) / x+1

Answer 1

Resposta:

X^2+1)/(X+1)=[X^2(1+1/X^2)]/[X(1+1/X)...  

=[(X).(1+1/X^2)]/(1+1/X)  

limX=+oo  

x->+oo  

lim[1+1/X^2]=lim1+lim1/X^2=1+0=1  

x->+oo  

lim[1+1/X]=lim1+lim1/X=1+0=1  

x->+oo  

Agora basta substituir :(+oo).(1)/(1)=+oo