[考古] 98台聯第十

[henry9621205 (清心小子)]

Let S be the surface parametrized by r(Θ,z) = 3sin2Θ i + 6(sinΘ)^2 j  + z k
 where 0=<Θ=<π Which of the following is equivalent to the surface
differential dσ ?


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◆ From: 192.192.13.101
推 guitarist326:向量微積分dS=|dr/d0crossdr/dz|d0dz
→ guitarist326:dS=|dr/d0 Cross dr/dz|
→ guitarist326:                      d0dz