Question

How do you find the horizontal asymptote. y = (1 - x)/(1 + x)?

Answer 1

Rewrite this as follows

`y=(1+x-2x)/(1+x)=1-(2x)/(1+x)`

Hence take the limit of x to infinity

`lim_(x->oo)y=-1`

Hence the horizontal asymptote is `y=-1`