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研究曲线的交点问题 ,就是探求由它们的方程所组成的方程组的实数解的问题 ,若该方程组消元后能转化为一元二次方程 ,常考虑运用根的判别式来解决 .运用这种方法 ,同学们产生过困惑吗 ?请参加我们的课堂讨论 .问题 (1)求直线 2ｘ -5ｙ + 5 =0与双曲线 ｙ =-10ｘ的交点 ;(2 )若
The problem of studying the intersection point of curves is to search for the real solution of the equations formed by their equations. If the equations can be transformed into a unitary quadratic equation after elimination, it is often considered to use the root discriminant to solve them. Did the students have any confusion? Please participate in our class discussion. Question (1) Find the intersection of the straight line 2x -5y + 5 =0 with the hyperbolic y = -10x; (2) If