CBSE Class 12 Mathematics 2026 Main Paper 65/4/2 · Q242 Marksvector_median
CBSE Class 12 Mathematics 2026 Main Paper 65/4/2 · Question 24 (Vector Algebra)
If AB=(2,3,1) and AC=(2,1,−1), find the vector of the median through A.
✅ Step-by-Step Solution
Final Answer: (2,2,0).
- Let D be the midpoint of BC.
- Then AD=(AB+AC)/2 by the midpoint rule.
- Average the components to get (2,2,0).
📋 CBSE Stepwise Marking Scheme
- [0.5 marks] Let D be the midpoint of BC.
- [1 mark] Then AD=(AB+AC)/2 by the midpoint rule.
- [0.5 marks] Average the components to get (2,2,0).
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