physics class 11th.
find the determinant of the vectors A and B. values of a and b is attached
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Explanation:
A = 3i +2j +4k
B = i + j + 2k
Cross product is displacement!
A×B =
| i j k |
| 3 2 4 |
| 1 1 2 |
= i (2×2-4) - j(3×2 -4) +k (3-2)
= 0 i - 2j +k
= -2j +k
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