Let W(s, t) = F(u(s, t), v(s, t)), where F, u, and v are differentiable, and the following applies. U(1,8) = -5 v(1, 8) = 0 Us(1,8) = 2 Vs(1,8) = -6 (1,8) = -2 V+(1,8) = -7 Fu(-5, 0) = -8 F✓(-5, 0) = 7 Find W,(1, 8) and We(1, 8). W,(1,8) W-(1,8) =

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