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The line r = (2i - j + 4k) + λ(i + 2j - k) has direction ratios:
A1, -2, 1
B-1, 2, 4
C2, -1, 4
D1, 2, -1
Answer & Solution
Correct answer: D. 1, 2, -1
The coefficients of the vector multiplied by λ are 1, 2 and -1.
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