>>13647880Your going for a number that is extremely close to that value.
So for example
1/(4 - x^2)
x=/= 2
x =/= -2
so instead we take a number that is infinitely close to 2 and -2.
So say you plug in -2.00000000000000001 and -1.9999999999999
If you get a number that is almost zero, round to zero.
If you get a number that is very large, say the limit diverges to infinity, but do not write that infinity is a number because it is not.
