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Question

The value of p for which the straight lines r=(2^i+9^j+13^k)+t(^i+2^j+3^k) and r=(3^i+7^j+p^k)+s(^i+2^j3^k) are coplanar is
 


Your Answer
A
-1
Your Answer
B
1
Correct Answer
C
-2
Your Answer
D
2

Solution

The correct option is C -2
∣ ∣5213p123123∣ ∣=0 gives p = - 2
 

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