The domain of a polynomial is R (real).
The domain of a rational function (polynomial divided by another) is R less the points where the denominator becomes zero.
The given function g(x) is a rational function where the denominator can be factorized into
(x^2-36)=(x+6)(x-6)
which enables you to locate the zeroes of the denominator.
The domain of g(x) is R (real) less the two zeroes of the denominator.
Find the domain of the function
g(x) = (x+7) / (x^2 - 36)
1 answer