Question 835185
{{{f(x)= sqrt(x^2+2)}}}
{{{f(-1)= sqrt((-1)^2+2)=sqrt(1+2)=sqrt(3)}}}
{{{f(1/2)= sqrt((1/2)^2+2)=sqrt(1/4+8/4)=sqrt(9/4)=3/2}}}
{{{f(sqrt(2))=sqrt((sqrt(2)^2+2))=sqrt(2+2)=sqrt(4)=2}}}