Current location - Training Enrollment Network - Mathematics courses - How to calculate a math problem? It is known that m is the point y 2 = 4x on the parabola, f is the focus of the parabola, and a is in the circle c: ...
How to calculate a math problem? It is known that m is the point y 2 = 4x on the parabola, f is the focus of the parabola, and a is in the circle c: ...
The focus of parabola is F( 1, 0), and the directrix equation is x=- 1.

According to the geometric properties of parabola, the distance from any point on the parabola to the focus is equal to the distance from the directrix. The combination of numbers and shapes is the simplest. If and only if point M is on the straight line y= 1 and point A is also on y= 1 and is the leftmost point of the circle, the minimum value of |MA|+|MF| is 4- 1.