What is the dot product of vectors a = 9i + 2j and b = 3i + 10j?
Vectors a = 9i + 2j और b = 3i + 10j का dot product क्या है?
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Correct Answer
A. 47
ExplanationStep 1: In dot product, multiply corresponding components and add. Step 2: a·b = 9×3 + 2×10 = 47. Step 3: Dot product gives a scalar, not a direction vector.
Step 1: Dot product में corresponding components multiply करके जोड़ते हैं। Step 2: a·b = 9×3 + 2×10 = 47। Step 3: Dot product में addition होता है, cross जैसी direction नहीं बनती।