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AP EAMCET202022 Sep 2020Evening ShiftMathematicsVector AlgebraActual

If p q = p r and p q = p r , then . . . .

Options

  1. Ap=r
  2. Bq=r
  3. Cp=q
  4. Dp+q=0

Correct answer

B. q=r

Step-by-step solution

p q = p r aligned & p ( q - r )=0 & p.q = p. r & p. ( q - r )=0 & aligned From Eqs. (i) and (ii) we can say that p is neither parallel nor Perpendicular to ( q - r ) aligned & q - r =0 & [ p 0] & q = r & aligned Hence, option (2) is correct.

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