Some of number is wrong!!!
Points should be diffrent!!!
Enter coordinates of the point A
x_{0}  =  
y_{0}  =  
z_{0}  = 
and the point B
x_{1}  =  
y_{1}  =  
z_{1}  = 
The number of digits after the decimal separator in numbers:
The canonical equation of a line in 3d space:

= 

= 

The parametric equation of line:
a(;;)  directing vector.
References
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