Find unit vectors that satisfy the stated conditions. NOTE: Enter the exact answers in terms of i,j and k. (a) Same direction as – 2i + 7j. u = (b) Oppositely directed to 12i – 6j+ 24k. v = (c) Same direction as the vector from the point A(-1,0,4) to the point В(2, 3, 3). w =

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