[問題] 微積分甲下 請問這題
請問這提該如何解呢?
Let γ be a differentiable vector function of t and set r = ║γ║.
Show that, where r ≠ 0
d γ 1 dγ
── (──) = ── [(γ x ──) x γ]
dt r r^3 dt
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09/09 01:50, 2F
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09/09 01:59, 3F
推
09/09 23:10, , 4F
09/09 23:10, 4F
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