Riley, I have a calculus question. {{CMD_7}} Hit me with it. {{CMD_8}} What's the derivative of {{MATH_9}}? {{CMD_10}} Hmmm{{CMD_11}} we haven't talked about that yet in our class. {{CMD_12}} I know! But maybe we can figure it out. {{CMD_13}} Well {{MATH_14}} and now we can use the chain rule to take its derivative {{ENV_15}} {{CMD_16}} But is this right? {{CMD_17}}