| body | --uriencoded--$$ \normalsize \begin%7Bcases%7D N_0(u,v) = u (2u-1) \\ N_1(u,v) = v (2v-1) \\ N_2(u,v) = w (2w-1) \\ N_3(u,v) = 4vw \\ N_4(u,v) = 4uw \\ N_5(u,v) = 4uv \\ \end%7Bcases%7D \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad (5) $$ |
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