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Find the initial point P of a vector u with terminal point Q(2,0,2), such that:9Fdhe iiial point P of a vector iu with terminal point g2.0,2, such h a) u has the same direction as v (5,4,-1) b) u is oppositevly directed to v (5,4,-1)

Respuesta :

sqdancefan

Answer:

  a)  P = (-3, 4, 3)

  b)  P = (7, 4, 1)

Step-by-step explanation:

a) You want Q-P = (5, 4, -1) where Q = (2, 0, 2). Solving for P, we get ...

  P = Q - (5, 4, -1) = (2-5, 4-0, 2-(-1))

  P = (-3, 4, 3)

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b) The vector in the opposite direction of the one given is the given one multiplied by -1.

  P = Q - (-1)(5, 4, -1) = (2+5, 0+4, 2-1)

  P = (7, 4, 1)