❤️Math Follow Me and Practice everyday 💯
🤔️Topic Today：AP Calculus Practice Questions and Solutions（AP Calculus问题详解）
🚩Topic Today：functions函数
🚩Key Terms
▶️the roots of an equation方程的根
▶️zeros of a function函数的零点
▶️graph图像，intercect交点
▶️the range of a function函数的值域
