Mathematics · Vector Calculus
यदि r = (cos nt)a + (sin nt)b, जहाँ a और b अचर सदिश (constant vectors) हैं, तो drdt × r =
- 1(cos nt + sin nt)(a × b)
- 2(cos nt + sin nt)(b × a)
- 3n(a × b)
- 4n(b × a)✓
सही उत्तर देखें
n(b × a)
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