And so the derivative, you take the 1 3rd, bring it out front, so it's 1 3rd, x to the 1 3rd minus one power. And so this is going to be 1 3rd times x to the 1 3rd minus one is negative 2 3rds, negative 2 3rd power, and we are done. And hopefully through these examples, you're seeing that the power rule is incredibly powerful. You can tackle a far broader range of derivatives than you might have initially thought. Let's do another example, and I'll make this one really nice and hairy. Let's say we wanna figure out the derivative with respect to x of the cube root of x squared. What is this going to be?