 In this video, we provide the solution to question number two. For the practice final exam for math 1210, we're asked to find the second derivative of the function f of x equals x cube minus three to the x. So to find the second derivative, we have to find the first derivative first by using usual rules of derivative calculations. We take the derivative of x cube, this can give us three x squared. We take the derivative of three to the x, we're gonna get three to the x times the natural log of three. That's our first derivative. To find the second derivative, we'll do the derivative again. Taking the derivative of three times x squared, we're gonna get six x. Taking the derivative of negative three to the x times the natural log of three. Since the natural log of three is just a constant multiple, we'll take the derivative and we'll again get three to the x times a natural log of three. But we already had a natural log of three there, so there should be a natural log of three squared. And so this leads us to select choice B as the correct answer. Six x minus the natural log of three squared times three to the x.