I love doing this
for a function p(x)/q(x)
if degree of p(x)<q(x), the horizontal assemtote is y=0
if degrees are equal, divide linear coefients
horzontal assemtotes
first simplify
then set denom to zero and solve for x values
so
f(x)=2/(x^2-2x-3)
less so HA=y=0
doesn't cross HA
VA, set denom to zer
x^2-2x-3=0
(x-2)(x-1)=0
HA, at x=1 and x=2
xint, set y=0 and solve
not applicatble, no xint
yint, set x=0
ying=-2/3
HA is y=2, doesn't cross it
VA's at x=1 and x=2
no xint
yint at (0,-2/3)
