And at first it could look intimidating. We have a sine of x here, we have a cosine of x, we have this crazy expression here, we have a pi over a cube root of x, we're squaring the whole thing, and at first it might seem intimidating. But as we'll see in this video, we can actually do this with the tools already in our toolkit, using our existing derivative properties, using what we know about the power rule, which tells us that the derivative with respect to x of x to the n is equal to n times x to the n minus one. We've seen that multiple times. We also need to use the fact that the derivative of cosine of x is equal to negative sine of x. And the other way around, the derivative with respect to x of sine of x is equal to positive cosine of x. So using just that, we can actually evaluate this, or evaluate g prime of x.