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Grade: 12th pass
        
Find the point on the plane 4x+3y+z=2 that is closest to (1,-1,1).
 
 
one month ago

Answers : (2)

Arun
23032 Points
							
Dear Akif
 
Indirectly we hwve to find out foot of perpendicular from (1, - 1,1) to the given plane
 
x -1 /4 = y +1/3 = z – 1/1 = – 2(0) / 26
 
x -1 /4 = y +1/3 = z – 1/1 = 0
 
hence x =1, y = -1, z = 1
 
Means (1, – 1, 1) lies on givne plane
 
one month ago
Vikas TU
9499 Points
							
Dear student 
The normal vector to the plane is (4,3,1)
P = (1,-1,1) + c(4,3,1) = (1+4c, -1+3c , 1+c) 
4(1+4c) +3(-1+3c) + 1+c = 1
26c +2 = 1 
c = -1/26 
P = (1,-1,1) - 1/26 ( 4,3,1) 
P = (0.84 , -1.11 , 0.96) 
 
one month ago
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