Calculus 3: Integration - Equations of Lines & Planes (5 of 27) Find the Symmetric Eqns. of a Line

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In this video I will find the 3 parametric and symmetric equations of a line in 3-D space (when given 2 points).

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Little confused at 1:30. The vector parallel to the points P1 and P2 is in fact the vector P1P2 without(before) the parametrization t?

blexaarron