Hello everyone, i'm trying to figure out the curvature of a line, First i'm suppose to make a hypothisis on what i think it would be, then i'm suppose to put a line in parametric vector form and find out really what the curvature of the line is. Well a line is pretty straight, so why can't I say the curvature is 0? or very close to 0? Well i got the line in parametric form passing through point (xo,yo,zo): x = xo + at y = yo + bt z = zo + ct So a line in 3 dimensions pass through (x1,y1) and (x2, y2) has parametric vector equation: x = x1 + (x2-x1)t Did i do this part right? Now i'm confused on what i'm suppose to do! Any help would be great!