NDA 2026 Mathematics question
Let , , and be the vectors. Consider the following : I. II. III. IV. V. where '' represents dot product and '' represents cross product of vectors. How many of the above are not well-defined?
Answer: (C)
Solution
Dot and cross products are defined only between two vectors. I: and are vectors, so their dot product is defined. II: the cross product of these two vectors is defined. III: and are scalars, and a
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