1. (a) A vector in the plane is a line segment with an assigned direction. In Figure I below, the vector u has initial point . and terminal point . vectors 2u and u + v. Sketch the (b) A vector in a coordinate plane is expressed by using components. In Figure II below, the vector u has initial point (,D and terminal point (.). In compo- nent form we write u = (.), and v = Then 2u = (. ) and u + v = ( D B u I II

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