Line, plane, two points, three points???
I think you should put some order in your mind (and in description also) ... :)
Return the 3n+1 sequence for n
Right and wrong
What is the distance from point P(x,y) to the line Ax + By + C = 0?
03 - Matrix Variables 1
Replace Vector Elements
Given a number find two variables
Find number of days
Calculate the area of a triangle between three points
arrangement of symbols
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