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MIT 18.02 Multivariable Calculus, Fall 2007 23 Online
OpenStudy (anonymous):

r(t) is the position of a particle, find an equation in x and y whose graph is the path of the particle. Find the particle's velocity and acceleration vectors. r(t) = (t+1)i +(t^2 -1)j, t = 1 I found v(t) = i+2j and a(t) = 2j.

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