✔ 最佳答案
幾時會有一個quadratic equation 係代表2條直線架
quadratic equation只會係parabola
而直線只係得一次
2007-01-06 05:29:20 補充:
1) 不是!A quadratic equation is a second-order polynomial equation in a single variable即ax^2 + bx + c = 0f(x) = ax^2 + bx + c 係 quadratic funtionform到個圖像叫parabola2) 這是一條equation of a conic通常咁寫Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0不過你個款我都好似有見過quadratic equation係conic既一種希望以上資料幫到你