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AP EAMCET20227 Jul 2022Evening ShiftMathematicsVector AlgebraActual

Let a = i +x j + k , b = i + j + k and | a + b |=| a |+| b | , then

Options

  1. Ax=1
  2. Bx=-1
  3. Cx=0
  4. DNo such real x exist

Correct answer

A. x=1

Step-by-step solution

| a + b |=| a |+| b | a , b are in same direction. 1 1 = x 1 = 1 1 x=1

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