(1 / 2) the distance from a moving point P to a point F (1,0) on a given rectangular coordinate plane is smaller than the distance from it to a straight line x = - 2 (1 / 2) it is known that the distance from the moving point P to the point F (1,0) on the rectangular coordinate plane is smaller than the distance from it to the straight line x = - 2. (1) the trajectory equation of the moving point P is solved. (2) the straight line l passes through the point a (- 1,0) and

(1 / 2) the distance from a moving point P to a point F (1,0) on a given rectangular coordinate plane is smaller than the distance from it to a straight line x = - 2 (1 / 2) it is known that the distance from the moving point P to the point F (1,0) on the rectangular coordinate plane is smaller than the distance from it to the straight line x = - 2. (1) the trajectory equation of the moving point P is solved. (2) the straight line l passes through the point a (- 1,0) and

Distance to f = distance to x = - 1
It's a parabola
y²=4x
(2)y=k(x+1)
k²x²+(2k²-4)x+k²=0
|x1-x2|=√(16-16k²)/k²
|AB|=√(1+k²）*√(16-16k²)/k²
d=|2k|/√(1+k²）
S =|AB|*d/2=4
(1-k²)/|k|=1
k=±√2/2
y=±√2/2(x+1)

How to express LN in MATLAB?

log

How to draw implicit function with MATLAB?
Some functions are in the form of implicit functions. How to draw their graphs? For example, the cardioid X. ^ 2 + y. ^ 2 + A * x = a * sqrt (X. ^ 2 + y. ^ 2)

You two upstairs, can you draw a picture with this command? Run it before you answer the question