学期期末考试试卷上的填空压轴题,由于点的位置不确定导致答案不唯一,致使班上的大多数高手因此题而与满分失之交臂.在此我想再与《数理天地》的读者分享解题的乐趣.题目如图1,点M是直线y=2x+3上的动点,过点M作平行于y轴的直线交x轴于点N,在y轴上取一点P,使△MNP为等腰直角三角形,请 The final exam semester papers fill the gap on the subject, due to the location of the point uncertainty leads to the answer is not unique, resulting in most of the masters of the class so full of points and missed points. Here I would like to “Mathematics and world” readers to share problems The subject is as shown in Figure 1. The point M is the moving point on the line y = 2x + 3, the point M is crossed by the line parallel to the y axis at the x-axis at point N and the point y on the y- Isosceles right triangle, please