Gu Xiqiao shook awake and stared at the blackboard for a short while, before starting, "Well, in my opinion, we can start with the Hesse Normal Form to prove the line QR, hence solving the first question. Then, we can find the equation of the line AF by using the point P which is on the same points. For the last question, does everyone remember the Lagrange Mean Value Theorem I talked about? We can just use it and substitute the two values in the question to find the answer."
Rebirth of an Idle Noblewoman
Fantasy · Road of Flowers
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