已知橢圓 \(C:\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1(ab0)\) 的左、右焦點分別為 \(F_1,F_2\) ,以 \(F_1F_2\) 為直徑的圓過橢圓的上、下頂點,長軸長為 \(4\) (1) 求橢圓 \(C\) (2) 設橢圓 \(C\) 的左右頂點分別為 \(A,B\) ,點 \(P(4,t)(t\neq0)\) ,過點
題目 Aboomerangis a set of 3 points that are all distinct andnotin a straight line. Given a listof three points in the plane, return whether these points are a boomerang. Example 1: