Calculus

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Let L1 be the line with the vector equation r= (-2,3) +s(-1,3), seR. Let L2 be with the line with parametric equation x=3t+2, y=t-7, teR. Are L1 and L2 perpendicular? How do you know?

  • Calculus -

    You have to look at their direction numbers

    direction of L1 is (-1,3)

    for L2, the direction is (3,1)

    since (3,1)(-1,3) = 0 , they are perpendicular.

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