(Pretending to be Alex Trebek) I've got a new costume. {{CMD_7}} Whoa! You look just like Trebek! {{CMD_8}} In {{CMD_9}}Jeopardy!{{CMD_10}}, I, Trebek, give you an answer, and you must tell me the question. {{CMD_11}} Uh Alex, `What are the rules of {{CMD_12}}Jeopardy!{{CMD_13}}?' {{CMD_14}} Ha. Exactly! Let's play a different version where I'll tell you a derivative, and you tell me the function. Are you ready? {{CMD_15}} I'll take ``Formulas for slope'' for {{MATH_16}}. {{CMD_17}} {{MATH_18}} {{CMD_19}} I've got an answer! Actually, I've got three different answers, I mean questions! {{CMD_20}} {{CMD_21}} ``What's the derivative of {{MATH_22}}?'' {{CMD_23}} ``What's the derivative of {{MATH_24}}?'' {{CMD_25}} ``What's the derivative of {{MATH_26}}?'' {{CMD_27}} {{CMD_28}} Hmmm. Now I'm not sure which one it was. {{CMD_29}} What about if you had given me {{MATH_30}}? {{CMD_31}}