In this video I go over the definition of derivative for a vector function, which is very similar to the definition for real valued functions. The derivative of a vector function is defined as the limit as h approaches zero of the secant vector (difference of two vectors separated by incrementing the parameter t by h) divided by h. As h approaches zero the secant vector approaches a vector that is parallel to the tangent vector to the curve. YouTube - Summary - Notes - Playlist - Vector Functions playlist
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