❤️Math Follow Me and Practice everyday 💯
🤔️跟我一起做💯
🌹Topic today：Functions函數
🔑Key words
▶️equality of two functions兩個函數相等
▶️domain定義域，range值域
▶️graph of a function函數圖，set of points點集
▶️coordinates坐标，coordinate axes坐标軸，coordinate plane坐标平面，origin原點
❤️Math Follow Me and Practice everyday 💯
🤔️跟我一起做💯
🌹Topic today：Functions函數
🔑Key words
▶️equality of two functions兩個函數相等
▶️domain定義域，range值域
▶️graph of a function函數圖，set of points點集
▶️coordinates坐标，coordinate axes坐标軸，coordinate plane坐标平面，origin原點