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Class 12 Vector Algebra · Conceptual Answer1 Marksparallel_vectors

Class 12 Maths · Vector Algebra · Conceptual Answer #41

Find a if (2,−3,4) and (a,6,−8) are collinear.

✅ Step-by-Step Solution

Final Answer: a = −4.
  1. The second vector is −2 times the first, from either its y- or z-component. Thus a = −2·2.
  2. a = −4.

📋 CBSE Stepwise Marking Scheme

  • [0.5 marks] The second vector is −2 times the first, from either its y- or z-component. Thus a = −2·2.
  • [0.5 marks] a = −4.

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