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. Well, that's just going to be three. And you could view that as just the power rule. If this was x to the first power, one times three x to the zeroth power. Well, x to the zero is just one, so you're just left with three. And the derivative of a constant, that's just gonna be zero. So that's f prime of x.