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Homework Help: Calculus III (help sketching graph)

  1. Jan 15, 2017 #1
    1. The problem statement, all variables and given/known data
    Sketch the curve with the given vector equation. Indicate with an arrow the direction in with 't' increases

    r(t)=<t, 2-t, 2t>

    2. Relevant equations
    parametric equation (can't type the equation, too confusing to use the template)

    3. The attempt at a solution
    So far, I have <1, -1, 2> and points (0, 2, 0). Am I even correct? And how do I sketch the graph. I know it's suppose to be in the xyz graph, but how do I graph the vector equation?
  2. jcsd
  3. Jan 15, 2017 #2


    Staff: Mentor

    What does the vector <1, -1, 2> represent?
    The point (0, 2, 0) corresponds to t = 0, right? To get a reasonable graph you're going to need way more than 1 point.
    For the parametric equations, what are x(t), y(t), and z(t)? All three are linear equations in t.

    The graph of your vector function will be in three-dimensional space. Have you drawn any surfaces or curves in 3D?
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