So the derivative of the numerator is the derivative of 4x squared is 8x minus 5 over, the derivative of the denominator is, well, the derivative of 1 is 0, the derivative of negative 3x squared is negative 6x. And once again, when you evaluate at infinity, the numerator is going to approach infinity, and the denominator is approaching negative infinity. Negative 6 times infinity is negative infinity. So this is negative infinity. So let's apply L'Hopital's Rule again. So if the limit of these guys' derivatives exist, or the rational function of the derivative of this guy divided by the derivative of that guy, if that exists, then this limit's going to be equal to the limit as x approaches infinity of arbitrary switch colors. Derivative of 8x minus 5 is just 8.