And once again, I just swapped these two around. That's what the inverse function will do. If you're mapping from, if f goes from negative two to negative 14, h is going to go from negative 14 back to negative two. So now we want to evaluate f prime of negative two. Well, let's figure out what f prime of x is. So f prime of x is equal to, see, we're just gonna leverage the power rule. So three times 1 1⁄2 is 3 1⁄2 times x to the three minus one power, which is just the second power, plus the derivative of three x with respect to x.